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Recent questions tagged isi2017dcg
0
votes
1
answer
1
ISI2017DCG1
The value of $\dfrac{1}{\log_2 n}+ \dfrac{1}{\log_3 n}+\dfrac{1}{\log_4 n}+ \dots + \dfrac{1}{\log_{2017} n}\:\:($ where $n=2017!)$ is $1$ $2$ $2017$ none of these
asked
Sep 18
in
Numerical Ability
by
gatecse
Boss
(
16.8k
points)

18
views
isi2017dcg
numericalability
logarithms
summation
0
votes
1
answer
2
ISI2017DCG2
The area of the shaded region in the following figure (all the arcs are circular) is $\pi$ $2 \pi$ $3 \pi$ $\frac{9}{8} \pi$
asked
Sep 18
in
Numerical Ability
by
gatecse
Boss
(
16.8k
points)

15
views
isi2017dcg
numericalability
geometry
area
0
votes
1
answer
3
ISI2017DCG3
If $2f(x)3f(\frac{1}{x})=x^2 \: (x \neq0)$, then $f(2)$ is $\frac{2}{3}$ $ – \frac{3}{2}$ $ – \frac{7}{4}$ $\frac{5}{4}$
asked
Sep 18
in
Calculus
by
gatecse
Boss
(
16.8k
points)

12
views
isi2017dcg
calculus
functions
0
votes
1
answer
4
ISI2017DCG4
If $A$ is a $3 \times 3$ matrix satisfying $A^3 – A^2 +AI= O$ (where $O$ is the zero matrix and $I$ is the identity matrix) then the value of $A^4$ is $A$ $O$ $I$ none of these
asked
Sep 18
in
Linear Algebra
by
gatecse
Boss
(
16.8k
points)

11
views
isi2017dcg
linearalgebra
matrices
nullmatrix
identitymatrix
0
votes
1
answer
5
ISI2017DCG5
The sum of the squares of the roots of $x^2(a2)xa1=0$ becomes minimum when $a$ is $0$ $1$ $2$ $5$
asked
Sep 18
in
Numerical Ability
by
gatecse
Boss
(
16.8k
points)

19
views
isi2017dcg
numericalability
quadraticequations
roots
0
votes
1
answer
6
ISI2017DCG6
Let $f(x) = \dfrac{x1}{x+1}, \: f^{k+1}(x)=f\left(f^k(x)\right)$ for all $k=1, 2, 3, \dots , 99$. Then $f^{100}(10)$ is $1$ $10$ $100$ $101$
asked
Sep 18
in
Calculus
by
gatecse
Boss
(
16.8k
points)

36
views
isi2017dcg
calculus
functions
+1
vote
1
answer
7
ISI2017DCG7
If $\begin{vmatrix} 10! & 11! & 12! \\ 11! & 12! & 13! \\ 12! & 13! & 14! \end{vmatrix} = k(10!)(11!)(12!)$, then the value of $k$ is $1$ $2$ $3$ $4$
asked
Sep 18
in
Linear Algebra
by
gatecse
Boss
(
16.8k
points)

20
views
isi2017dcg
linearalgebra
determinant
0
votes
1
answer
8
ISI2017DCG8
If $x,y,z$ are in $A.P.$ and $a>1$, then $a^x, a^y, a^z$ are in $A.P.$ $G.P$ $H.P$ none of these
asked
Sep 18
in
Numerical Ability
by
gatecse
Boss
(
16.8k
points)

10
views
isi2017dcg
numericalability
progressionseries
+1
vote
1
answer
9
ISI2017DCG9
The solution of $\log_5(\sqrt{x+5}+\sqrt{x})=1$ is $2$ $4$ $5$ none of these
asked
Sep 18
in
Numerical Ability
by
gatecse
Boss
(
16.8k
points)

17
views
isi2017dcg
numericalability
logarithms
+1
vote
2
answers
10
ISI2017DCG10
The value of the Boolean expression (with usual definitions) $(A’BC’)’ +(AB’C)’$ is $0$ $1$ $A$ $BC$
asked
Sep 18
in
Digital Logic
by
gatecse
Boss
(
16.8k
points)

52
views
isi2017dcg
digitallogic
booleanalgebra
booleanexpression
0
votes
0
answers
11
ISI2017DCG11
The coefficient of $x^6y^3$ in the expression $(x+2y)^9$ is $84$ $672$ $8$ none of these
asked
Sep 18
in
Combinatory
by
gatecse
Boss
(
16.8k
points)

6
views
isi2017dcg
permutationandcombination
binomialtheorem
0
votes
1
answer
12
ISI2017DCG12
Two sets have $m$ and $n$ elements. The number of subsets of the first set is $96$ more than that of the second set. Then the values of $m$ and $n$ are $8$ and $6$ $7$ and $6$ $7$ and $5$ $6$ and $5$
asked
Sep 18
in
Set Theory & Algebra
by
gatecse
Boss
(
16.8k
points)

6
views
isi2017dcg
settheory
sets
0
votes
0
answers
13
ISI2017DCG13
The value of $\dfrac{x}{1x^2} + \dfrac{x^2}{1x^4} + \dfrac{x^4}{1x^8} + \dfrac{x^8}{1x^{16}}$ is $\frac{1}{1x^{16}}$ $\frac{1}{1x^{12}}$ $\frac{1}{1x} – \frac{1}{1x^{16}}$ $\frac{1}{1x} – \frac{1}{1x^{12}}$
asked
Sep 18
in
Numerical Ability
by
gatecse
Boss
(
16.8k
points)

11
views
isi2017dcg
numericalability
series
summation
0
votes
1
answer
14
ISI2017DCG14
If $a,b,c$ are the sides of a triangle such that $a:b:c=1: \sqrt{3}:2$, then $A:B:C$ (where $A,B,C$ are the angles opposite to the sides of $a,b,c$ respectively) is $3:2:1$ $3:1:2$ $1:2:3$ $1:3:2$
asked
Sep 18
in
Numerical Ability
by
gatecse
Boss
(
16.8k
points)

8
views
isi2017dcg
numericalability
geometry
triangles
+1
vote
1
answer
15
ISI2017DCG15
The number of solutions of $\tan^{1}(x1) + \tan^{1}(x) + \tan^{1}(x+1) = \tan^{1}(3x)$ is $1$ $2$ $3$ $4$
asked
Sep 18
in
Numerical Ability
by
gatecse
Boss
(
16.8k
points)

14
views
isi2017dcg
numericalability
inversetrigonometry
0
votes
1
answer
16
ISI2017DCG16
If $\cos x = \dfrac{1}{2}$, the value of the expression $\dfrac{\cos 6x+6 \cos 4x+15 \cos 2x +10}{\cos 5x+5 \cos 3x +10 \cos x}$ is $\frac{1}{2}$ $1$ $\frac{1}{4}$ $0$
asked
Sep 18
in
Numerical Ability
by
gatecse
Boss
(
16.8k
points)

9
views
isi2017dcg
numericalability
trigonometry
0
votes
2
answers
17
ISI2017DCG17
If $\cos ^{2}x+ \cos ^{4} x=1$, then $\tan ^{2} x+ \tan ^{4} x$ is equal to $1$ $0$ $2$ none of these
asked
Sep 18
in
Numerical Ability
by
gatecse
Boss
(
16.8k
points)

10
views
isi2017dcg
numericalability
trigonometry
0
votes
0
answers
18
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
asked
Sep 18
in
Numerical Ability
by
gatecse
Boss
(
16.8k
points)

7
views
isi2017dcg
numericalability
trigonometry
geometry
0
votes
0
answers
19
ISI2017DCG19
The angle between the tangents drawn from the point $(1, 7)$ to the circle $x^2+y^2=25$ is $\tan^{1} (\frac{1}{2})$ $\tan^{1} (\frac{2}{3})$ $\frac{\pi}{2}$ $\frac{\pi}{3}$
asked
Sep 18
in
Numerical Ability
by
gatecse
Boss
(
16.8k
points)

6
views
isi2017dcg
numericalability
geometry
circle
trigonometry
0
votes
1
answer
20
ISI2017DCG20
If the coordinates of the middle point of the portion of a line intercepted between the coordinate axes are $(3,2)$, then the equation of the straight line is $2x+3y=12$ $3x+2y=0$ $2x+3y=0$ $3x+2y=12$
asked
Sep 18
in
Numerical Ability
by
gatecse
Boss
(
16.8k
points)

7
views
isi2017dcg
numericalability
geometry
straightline
0
votes
1
answer
21
ISI2017DCG21
If $a,b,c$ are in $A.P.$ , then the straight line $ax+by+c=0$ will always pass through the point whose coordinates are $(1,2)$ $(1,2)$ $(1,2)$ $(1,2)$
asked
Sep 18
in
Numerical Ability
by
gatecse
Boss
(
16.8k
points)

7
views
isi2017dcg
numericalability
geometry
straightline
arithmeticseries
+1
vote
1
answer
22
ISI2017DCG22
Let $A_1,A_2,A_3, \dots , A_n$ be $n$ independent events such that $P(A_i) = \frac{1}{i+1}$ for $i=1,2,3, \dots , n$. The probability that none of $A_1, A_2, A_3, \dots , A_n$ occurs is $\frac{n}{n+1}$ $\frac{1}{n+1}$ $\frac{n1}{n+1}$ none of these
asked
Sep 18
in
Probability
by
gatecse
Boss
(
16.8k
points)

18
views
isi2017dcg
probability
independentevents
+1
vote
3
answers
23
ISI2017DCG23
A determinant is chosen at random from the set of all determinants of order $2$ with elements $0$ or $1$ only. The probability of choosing a nonzero determinant is $\frac{3}{16}$ $\frac{3}{8}$ $\frac{1}{4}$ none of these
asked
Sep 18
in
Probability
by
gatecse
Boss
(
16.8k
points)

39
views
isi2017dcg
probability
randomvariable
determinants
0
votes
0
answers
24
ISI2017DCG24
The differential equation $x \frac{dy}{dx} y=x^3$ with $y(0)=2$ has unique solution no solution infinite number of solutions none of these
asked
Sep 18
in
Others
by
gatecse
Boss
(
16.8k
points)

9
views
isi2017dcg
engineeringmathematics
calculus
nongate
differentiableequation
0
votes
0
answers
25
ISI2017DCG25
If $f(x) = \begin{vmatrix} 2 \cos ^2 x & \sin 2x & – \sin x \\ \sin 2x & 2 \sin ^2 x & \cos x \\ \sin x & – \cos x & 0 \end{vmatrix},$ then $\int_0^{\frac{\pi}{2}} [ f(x) + f’(x)] dx$ is $\pi$ $\frac{\pi}{2}$ $0$ $1$
asked
Sep 18
in
Linear Algebra
by
gatecse
Boss
(
16.8k
points)

9
views
isi2017dcg
linearalgebra
determinant
definiteintegration
differentiation
0
votes
1
answer
26
ISI2017DCG26
The value of $\underset{n \to \infty}{\lim} \bigg( \dfrac{1}{1n^2} + \dfrac{2}{1n^2} + \dots + \dfrac{n}{1n^2} \bigg)$ is $0$ $ – \frac{1}{2}$ $\frac{1}{2}$ none of these
asked
Sep 18
in
Calculus
by
gatecse
Boss
(
16.8k
points)

10
views
isi2017dcg
calculus
limits
series
0
votes
1
answer
27
ISI2017DCG27
The limit of the sequence $\sqrt{2}, \sqrt{2\sqrt{2}}, \sqrt{2\sqrt{2\sqrt{2}}}, \dots$ is $1$ $2$ $2\sqrt{2}$ $\infty$
asked
Sep 18
in
Calculus
by
gatecse
Boss
(
16.8k
points)

12
views
isi2017dcg
calculus
limits
0
votes
2
answers
28
ISI2017DCG28
A basket contains some white and blue marbles. Two marbles are drawn randomly from the basket without replacement. The probability of selecting first a white and then a blue marble is $0.2$. The probability of selecting a white marble in the first draw is $0.5$. What is the ... blue marble in the second draw, given that the first marble drawn was white? $0.1$ $0.4$ $0.5$ $0.2$
asked
Sep 18
in
Probability
by
gatecse
Boss
(
16.8k
points)

29
views
isi2017dcg
probability
ballsinbins
0
votes
1
answer
29
ISI2017DCG29
The area (in square unit) of the portion enclosed by the curve $\sqrt{2x}+ \sqrt{2y} = 2 \sqrt{3}$ and the axes of reference is $2$ $4$ $6$ $8$
asked
Sep 18
in
Numerical Ability
by
gatecse
Boss
(
16.8k
points)

13
views
isi2017dcg
numericalability
geometry
area
0
votes
2
answers
30
ISI2017DCG30
If $f(x)=e^{5x}$ and $h(x)=f’’(x)+2f’(x)+f(x)+2$ then $h(0)$ equals $38$ $8$ $4$ $0$
asked
Sep 18
in
Calculus
by
gatecse
Boss
(
16.8k
points)

12
views
isi2017dcg
calculus
differentiation
functions
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