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Recent questions and answers in Numerical Ability
+2
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2
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1
Square Root Aptitude Doubt
Please help with this question: $(\sqrt{243}+3)^x+(\sqrt{243}3)^x=15^x$.
answered
6 days
ago
in
Numerical Ability
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smsubham
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generalaptitude
+9
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2
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2
GATE2016 Aptitude Set 8: GA10
The numeral in the units position of $211^{870}+146^{127} \times 3^{424}$ is ________.
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6 days
ago
in
Numerical Ability
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smsubham
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1.3k
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numericalability
numericalanswers
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2
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3
GATE201712178751944
answered
6 days
ago
in
Numerical Ability
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smsubham
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+5
votes
3
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4
GATE2019 ME1: GA7
A person divided an amount of Rs. $100,000$ into two parts and invested in two different schemes. In one he got $10 \%$ profit and in the other he got $12 \%$. If the profit percentages are interchanged with these investments he would have got Rs. $120$ less. Find the ratio between his investments in the two schemes. $9:16$ $11:14$ $37:63$ $47:53$
answered
Mar 19
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Numerical Ability
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gate2019me1
generalaptitude
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ratioproportion
profitloss
+6
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8
answers
5
GATE2013 CE: GA9
A firm is selling its product at Rs. $60$ per unit. The total cost of production is Rs. $100$ and firm is earning total profit of Rs. $500$. Later, the total cost increased by $30\%.$ By what percentage the price should be increased to maintained the same profit level. $5$ $10$ $15$ $30$
answered
Mar 18
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6
ISI2018DCG19
The area of the region formed by line segments joining the points of intersection of the circle $x^2+y^210x6y+9=0$ with the two axes in succession in a definite order (clockwise or anticlockwise) is $16$ $9$ $3$ $12$
answered
Mar 15
in
Numerical Ability
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haralk10
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isi2018dcg
circle
intersection
nongate
0
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1
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7
ISI2017DCG19
The angle between the tangents drawn from the point $(1, 7)$ to the circle $x^2+y^2=25$ is $\tan^{1} (\frac{1}{2})$ $\tan^{1} (\frac{2}{3})$ $\frac{\pi}{2}$ $\frac{\pi}{3}$
answered
Mar 15
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Numerical Ability
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haralk10
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537
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21
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isi2017dcg
numericalability
geometry
circle
trigonometry
0
votes
1
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8
ISI2017DCG18
If $a,b,c$ are the sides of $\Delta ABC$, then $\tan \frac{BC}{2} \tan \frac{A}{2}$ is equal to $\frac{b+c}{bc}$ $\frac{bc}{b+c}$ $\frac{cb}{c+b}$ none of these
answered
Mar 15
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haralk10
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537
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28
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isi2017dcg
numericalability
trigonometry
geometry
0
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1
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9
ISI2016DCG70
Water pours into a rectangular tank of $20\:metres$ depth which was initially halffilled. The rate at which the height of the water rises is inversely proportional to the height of the water at that instant. If the height of the water after an hour is observed to be $12\:metres$, ... hours, will be required to fill up the tank? $\frac{75}{11}$ $\frac{125}{11}$ $\frac{25}{3}$ $5$
answered
Mar 14
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haralk10
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537
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isi2016dcg
numericalability
worktime
0
votes
1
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10
ISI2018PCBA2
Let there be a pile of $2018$ chips in the center of a table. Suppose there are two players who could alternately remove one, two or three chips from the pile. At least one chip must be removed, but no more than three chips can be removed in a ... game, that is, whatever moves his opponent makes, he can always make his moves in a certain way ensuring his win? Justify your answer.
answered
Mar 1
in
Numerical Ability
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akashsahapro19
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105
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56
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isi2018pcba
generalaptitude
numericalability
logicalreasoning
descriptive
+2
votes
1
answer
11
CMI2014A09
A company is due to send a shipment to a client and the CEO has resigned. To select a new CEO, some candidates have been interviewed. One of them will be chosen through a vote. If the workers union resort to a strike and the candidates have to be ... B). If the workers union resorted to a strike, then the number of voters was greater than or equal to the number of abstainers.
answered
Mar 1
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akashsahapro19
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105
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79
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cmi2014
logicalreasoning
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vote
1
answer
12
ISI2014PCBA2a
Let $A$ be a $30 \times 40$ matrix having $500$ nonzero entries. For $1 \leq i \leq 30$, let $r_i$ be the number of nonzero entries in the $i$th row, and for $1 \leq j \leq 40$, let $m_j$ be the number of nonzero entries in the $j$th column. Show that there is a k such that $1 \leq k \leq 30$, $r_k \geq 17$ and there is an $l$ such that $1 \leq l \leq 40$, $m_l \leq 12$.
answered
Feb 28
in
Numerical Ability
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akashsahapro19
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105
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74
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isi2014
descriptive
numericalability
+2
votes
2
answers
13
GATE2020CSGA9
Two straight lines are drawn perpendicular to each other in $XY$ plane. If $\alpha$ and $\beta$ are the acute angles the straight lines make with the $\text{X}$ axis, then $\alpha + \beta$ is_______. $60^{\circ}$ $90^{\circ}$ $120^{\circ}$ $180^{\circ}$
answered
Feb 26
in
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immanujs
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gate2020cs
geometry
cartesiancoordinates
numericalability
0
votes
3
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14
cil2017 RQ22
answered
Feb 24
in
Numerical Ability
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Neeraj Dhiman
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99
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112
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cil2017
0
votes
1
answer
15
TIFR2020A14
A ball is thrown directly upwards from the ground at a speed of $10\: ms^{1},$ on a planet where the gravitational acceleration is $10\: ms^{2}.$ consider the following statements: The ball reaches the ground exactly $2$ seconds after it is thrown up The ball travels ... $3$ is correct None of the Statements $1,2$ or $3$ is correct All of the Statements $1,2$ and $3$ are correct
answered
Feb 19
in
Numerical Ability
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ankitgupta.1729
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tifr2020
+2
votes
3
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16
GATE2019 ME2: GA7
Two pipes $P$ and $Q$ can fill a tank in $6$ hours and $9$ hours respectively, while a third pipe $R$ can empty the tank in $12$ hours. Initially, $P$ and $R$ are open for $4$ hours, Then $P$ is closed and $Q$ is opened. After $6$ more hours $R$ is closed. The total time taken to fill the tank (in hours) is ____ $13.50$ $14.50$ $15.50$ $16.50$
answered
Feb 14
in
Numerical Ability
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Kushagra गुप्ता
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496
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gate2019me2
generalaptitude
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+1
vote
3
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17
GATE2019 EE: GA4
It takes two hours for a person $X$ to mow the lawn. $Y$ can mow the same lawn in four hours. How long (in minutes) will it take $X$ and $Y,$ if they work together to mow the lawn$?$ $60$ $80$ $90$ $120$
answered
Feb 14
in
Numerical Ability
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Kushagra गुप्ता
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gate2019ee
generalaptitude
numericalability
worktime
+3
votes
3
answers
18
GATE2019 EC: GA3
It would take one machine $4$ hours to complete a production order and another machine $2$ hours to complete the same order. If both machines work simultaneously at their respective constant rates, the time taken to complete the same order is ________ hours. $2/3$ $3/4$ $4/3$ $7/3$
answered
Feb 14
in
Numerical Ability
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gate2019ec
generalaptitude
numericalability
worktime
+2
votes
3
answers
19
GATE2019 CE2: GA9
An oil tank can be filled by pipe $X$ in $5$ hours and pipe $Y$ in $4$ hours, each pump working on its own. When the oil tank is full and the drainage hole is open, the oil is drained in $20$ hours. If initially the tank was empty and someone started the two ... for the tank to be filled? (Assume that the rate of drainage is independent of the Head) $1.50$ $2.00$ $2.50$ $4.00$
answered
Feb 14
in
Numerical Ability
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Kushagra गुप्ता
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256
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gate2019ce2
generalaptitude
numericalability
worktime
0
votes
3
answers
20
GATE2017 ME2: GA7
$X$ bullocks and $Y$ tractors take $8$ days to plough a field. If we have half the number of bullocks and double the number of tractors, it takes $5$ days to plough the same field. How many days will it take $X$ bullocks alone to plough the field? $30$ $35$ $40$ $45$
answered
Feb 14
in
Numerical Ability
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Kushagra गुप्ता
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5.8k
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375
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gate2017me2
generalaptitude
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worktime
0
votes
2
answers
21
GATE2017 EC2: GA8
$1200$ men and $500$ women can build a bridge in $2$ weeks. $900$ men and $250$ women will take $3$ weeks to build the same bridge. How many men will be needed to build the bridge in one week? $3000$ $3300$ $3600$ $3900$
answered
Feb 14
in
Numerical Ability
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146
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gate2017ec2
generalaptitude
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worktime
+10
votes
3
answers
22
GATE201064
$5$ skilled workers can build a wall in $20$ days; $8$ semiskilled workers can build a wall in $25$ days; $10$ unskilled workers can build a wall in $30$ days. If a team has $2$ skilled, $6$ semiskilled and $5$ unskilled workers, how long it will take to build the wall? $20$ days $18$ days $16$ days $15$ days
answered
Feb 12
in
Numerical Ability
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Kushagra गुप्ता
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2.6k
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gate2010
numericalability
normal
worktime
+13
votes
4
answers
23
GATE20152GA6
If the list of letters $P$, $R$, $S$, $T$, $U$ is an arithmetic sequence, which of the following are also in arithmetic sequence? $2P, 2R, 2S, 2T, 2U$ $P3, R3, S3, T3, U3$ $P^2, R^2, S^2, T^2, U^2$ I only I and II II and III I and III
answered
Feb 12
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Kushagra गुप्ता
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gate20152
numericalability
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0
votes
2
answers
24
TIFR2020A15
The sequence $s_{0},s_{1},\dots , s_{9}$ is defined as follows: $s_{0} = s_{1} + 1$ $2s_{i} = s_{i1} + s_{i+1} + 2\:\: \text{for}\: 1 \leq i \leq 8$ $2s_{9} = s_{8} + 2$ What is $s_{0}?$ $81$ $95$ $100$ $121$ $190$
answered
Feb 11
in
Numerical Ability
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ankitgupta.1729
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tifr2020
generalaptitude
numericalability
numbersystem
0
votes
1
answer
25
TIFR2020A6
What is the maximum number of regions that the plane $\mathbb{R}^{2}$ can be partitioned into using $10$ lines? $25$ $50$ $55$ $56$ $1024$ Hint: Let $A(n)$ be the maximum number of partitions that can be made by $n$ lines. Observe that $A(0) = 1, A(2) = 2,A(2) = 4$ etc. Come up with a recurrence equation for $A(n).$
answered
Feb 11
in
Numerical Ability
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Sourajit25
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tifr2020
generalaptitude
numericalability
numbersystem
+1
vote
2
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26
GATE2017 ME2: GA3
If $a$ and $b$ are integers and $ab$ is even, which of the following must always be even? $ab$ $a^{2}+b^{2}+1$ $a^{2}+b+1$ $abb$
answered
Feb 5
in
Numerical Ability
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Lakshman Patel RJIT
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gate2017me2
generalaptitude
numericalability
numbertheory
+2
votes
2
answers
27
GATE2016 ME2: GA9
The binary operation $\square$ is defined as $a\square b = ab+(a+b),$ where $a$ and $b$ are any two real numbers. The value of the identity element of this operation, defined as the number $x$ such that $a\square x = a,$ for any $a$, is $0$ $1$ $2$ $10$
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Feb 5
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Numerical Ability
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Lakshman Patel RJIT
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gate2016me2
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numbertheory
easy
+10
votes
3
answers
28
GATE2014 EC3: GA4
The next term in the series $81, 54, 36, 24,\dots $ is_________.
answered
Feb 5
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Numerical Ability
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Lakshman Patel RJIT
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gate2014ec3
numberseries
numericalability
numericalanswers
0
votes
2
answers
29
GATE2010 MN: GA5
A person invest Rs.1000 at $10\%$ annual compound interest for $2$ years$.$ At the end of two years, the whole amount is invested at an annual simple interest of $12\%$ for $5$ years$.$ The total value of the investment finally is $:$ $1776$ $1760$ $1920$ $1936$
answered
Feb 1
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gate2010mn
simplecompoundinterest
+11
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4
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30
GATE20151GA3
Given Set $A= {2, 3, 4, 5}$ and Set $B= { 11, 12, 13, 14, 15}$, two numbers are randomly selected, one from each set. What is the probability that the sum of the two numbers equals $16$? $0.20$ $0.25$ $0.30$ $0.33$
answered
Feb 1
in
Numerical Ability
by
Naseer
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29
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1.7k
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gate20151
numericalability
probability
normal
+14
votes
3
answers
31
GATE20142GA5
The value of $\sqrt{12+\sqrt{12+\sqrt{12+\dots}}} $is $3.464$ $3.932$ $4.000$ $4.444$
answered
Jan 27
in
Numerical Ability
by
Asim Siddiqui 4
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gate20142
numericalability
easy
numberseries
0
votes
1
answer
32
ISI2014DCG61
If $l=1+a+a^2+ \dots$, $m=1+b+b^2+ \dots$, and $n=1+c+c^2+ \dots$, where $\mid a \mid <1, \: \mid b \mid < 1, \: \mid c \mid <1$ and $a,b,c$ are in arithmetic progression, then $l, m, n$ are in arithmetic progression geometric progression harmonic progression none of these
answered
Jan 26
in
Numerical Ability
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mudit23june
(
33
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96
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isi2014dcg
numericalability
arithmeticseries
+1
vote
2
answers
33
GATE2018 ME1: GA8
From the time the front of a train enters a platform, it takes $25$ seconds for the back of the train to leave the platform, while traveling at a constant speed of $54$ km/h. At the same speed, it takes $14$ seconds to pass a man running at $9$ km/h in the same ... that of the platform in meters, respectively? $210$ and $140$ $162.5$ and $187.5$ $245$ and $130$ $175$ and $200$
answered
Jan 26
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gate2018me1
generalaptitude
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speedtimedistance
+5
votes
2
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34
GATE2014 EC3: GA8
A man can row at $8$ km per hour in still water. If it takes him thrice as long to row upstream, as to row downstream, then find the stream velocity in km per hour.
answered
Jan 26
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Numerical Ability
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gate2014ec3
numericalability
speedtimedistance
normal
numericalanswers
0
votes
1
answer
35
ISI2014DCG54
The number of real roots of the equation $1+\cos ^2x+\cos ^3 x – \cos^4x=5$ is equal to $0$ $1$ $3$ $4$
answered
Jan 26
in
Numerical Ability
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mudit23june
(
33
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112
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isi2014dcg
numericalability
trigonometry
roots
+13
votes
3
answers
36
GATE20153GA8
Choose the most appropriate equation for the function drawn as thick line, in the plot below. $x=yy$ $x=(yy)$ $x=y+y$ $x=(y+y)$
answered
Jan 25
in
Numerical Ability
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JashanArora
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gate20153
numericalability
normal
functions
+1
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2
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37
GATE2018 CH: GA9
If $x^{2}+ x  1 = 0$ what is the value of $x^4 + \dfrac{1}{x^4}$? $1$ $5$ $7$ $9$
answered
Jan 24
in
Numerical Ability
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gate2018ch
numericalability
easy
polynomials
+3
votes
3
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38
GATE2019 ME2: GA4
The product of three integers $X$, $Y$ and $Z$ is $192$. $Z$ is equal to $4$ and $P$ is equal to the average of $X$ and $Y$. What is the minimum possible value of $P$? $6$ $7$ $8$ $9.5$
answered
Jan 22
in
Numerical Ability
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Nikhil gate 2020
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409
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gate2019me2
generalaptitude
numericalability
numericalcomputation
+1
vote
2
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39
GATE2018 CE1: GA6
A fruit seller sold a basket of fruits at $\text{12.5%}$ loss. Had he sold it for Rs. $108$ more, he would have made a $\text{10%}$ gain. What is the loss in Rupees incurred by the fruit seller? $48$ $52$ $60$ $108$
answered
Jan 20
in
Numerical Ability
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Kushagra गुप्ता
Loyal
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5.8k
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gate2018ce1
generalaptitude
numericalability
profitloss
+5
votes
4
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40
GATE2014 EC4: GA10
A five digit number is formed using the digits $1,3,5,7$ and $9$ without repeating any of them. What is the sum of all such possible five digit numbers? $6666660$ $6666600$ $6666666$ $6666606$
answered
Jan 20
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Lakshman Patel RJIT
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gate2014ec4
numericalability
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permutationandcombination
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