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User Rishabh Gupta 2
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Answers by Rishabh Gupta 2
5
votes
1
Invertible Matrix
Let A be a $5 × 5$ invertible matrix with row sums $1$. That is $\sum_{j=1}^{5} a_{ij} = 1$ for $1 \leq i\leq 5$. Then, what is the sum of all entries of $A^{-1}$.
answered
in
Linear Algebra
Aug 8, 2018
606
views
engineering-mathematics
linear-algebra
matrix
easy
12
votes
2
TIFR-2015-Maths-A-1
Let $A$ be an invertible $10 \times 10$ matrix with real entries such that the sum of each row is $1$. Then The sum of the entries of each row of the inverse of $A$ is $1$ The sum of the entries of each column of the inverse of $A$ is $1$ The trace of the inverse of $A$ is non-zero None of the above
answered
in
Linear Algebra
Aug 8, 2018
1.3k
views
tifrmaths2015
linear-algebra
matrix
6
votes
3
Peter Linz Edition 4 Exercise 1.2 Question 14.g (Page No. 29)
$L = \left \{ a^{n} b^{m} : n\geq 0,m>n \right \}$ Find a grammar that generates $L^3$
answered
in
Theory of Computation
Feb 26, 2018
359
views
theory-of-computation
peter-linz
peter-linz-edition4
grammar
11
votes
4
GATE2018 CH: GA-7
A set of $4$ parallel lines intersect with another set of $5$ parallel lines. How many parallelograms are formed? $20$ $48$ $60$ $72$
answered
in
Quantitative Aptitude
Feb 21, 2018
2.2k
views
gate2018-ch
general-aptitude
quantitative-aptitude
easy
geometry
6
votes
5
GATE2018 CH: GA-5
Arrange the following three-dimensional objects in the descending order of their volumes: A cuboid with dimensions $\text{10 cm, 8 cm and 6 cm}$ A cube of side $\text{8 cm}$ A cylinder with base radius $\text{7 cm}$ and height $\text{7 cm}$ A sphere of radius $\text{7 cm}$ ... $\text{ii), i), iv), iii)}$ $\text{iii), ii), i), iv)}$ $\text{iv), iii), ii), i)}$
answered
in
Quantitative Aptitude
Feb 21, 2018
2.0k
views
gate2018-ch
quantitative-aptitude
normal
geometry
176
votes
6
GATE CSE 2018 | Question: 43
Let $G$ be a graph with $100!$ vertices, with each vertex labelled by a distinct permutation of the numbers $1, 2,\ldots, 100.$ There is an edge between vertices $u$ and $v$ if and only if the label of $u$ can be obtained by swapping two adjacent ... denote the degree of a vertex in $G$, and $z$ denote the number of connected components in $G$. Then, $y+10z=$ ______.
answered
in
Algorithms
Feb 14, 2018
15.3k
views
gatecse-2018
algorithms
graph-algorithms
numerical-answers
111
votes
7
GATE CSE 2018 | Question: 51
A processor has $16$ integer registers $\text{(R0, R1}, \ldots ,\text{ R15)}$ and $64$ floating point registers $\text{(F0, F1}, \ldots , \text{F63)}.$ It uses a $2\text{- byte}$ instruction format. There are four categories of ... $\text{(1F)}.$ The maximum value of $\text{N}$ is _________.
answered
in
CO and Architecture
Feb 14, 2018
18.3k
views
gatecse-2018
co-and-architecture
machine-instructions
instruction-format
numerical-answers
321
votes
8
GATE CSE 2018 | Question: 46
The number of possible min-heaps containing each value from $\{1,2,3,4,5,6,7\}$ exactly once is _______
answered
in
DS
Feb 14, 2018
28.1k
views
gatecse-2018
binary-heap
numerical-answers
combinatory
12
votes
9
GATE CSE 2001 | Question: 21-b
Consider a relation examinee (regno, name, score), where regno is the primary key to score is a real number. Write an SQL query to list the regno of examinees who have a score greater than the average score.
answered
in
Databases
Feb 8, 2018
1.4k
views
gatecse-2001
databases
sql
normal
descriptive
9
votes
10
CMI2017-A-08
A $\text{stable sort}$ preserves the order of values that are equal with respect to the comparison function. We have a list of three-dimensional points $[(7, 1, 8),(3, 5, 7),(6, 1, 4),(6, 5, 9),(0, 2, 5),(9, 0, 9)].$ We sort these in ascending order by the second coordinate. Which of the following ... $[(9, 0, 9),(6, 1, 4),(7, 1, 8),(0, 2, 5),(3, 5, 7),(6, 5, 9)]$
answered
in
Algorithms
Feb 5, 2018
1.4k
views
cmi2017
algorithms
sorting
16
votes
11
CMI2017-A-03
Four siblings go shopping with their father. If Abhay gets shoes, then Asha does not get a necklace. If Arun gets a T-shirt, then Aditi gets bangles. If Abhay does not get shoes or Aditi gets bangles, the mother will be happy. Which of the following is TRUE? If the ... shoes. If the mother is not happy, then Asha did not get a necklace and Arun did not get a T-shirt. None of the above.
answered
in
Analytical Aptitude
Feb 5, 2018
623
views
cmi2017
logical-reasoning
11
votes
12
CMI2017-A-01
The regular expression $(a^*+b)^*$ is equivalent to which of the following regular expressions: $a^*b^*$ $(a^*b+b)^*$ $(a+b^*)^*$ $(a^*b)^*$
answered
in
Theory of Computation
Feb 5, 2018
749
views
cmi2017
theory-of-computation
regular-expression
4
votes
13
Test by Bikram | Mock GATE | Test 3 | Question: 15
$’X’$ and $’T’$ are two square matrices. $’X’$ has eigen values $3, 0, 2$. $’T’$ has eigen values $4$ and $1$. Which of the following statements is CORRECT? $X$ and $T$ both are invertible. $T$ is invertible but not $X$. $X$ is invertible but not $T$. None of them are invertible.
answered
in
GATE
Feb 1, 2018
144
views
tbb-mockgate-3
engineering-mathematics
linear-algebra
matrix
eigen-value
1
vote
14
Test by Bikram | Mock GATE | Test 4 | Question: 27
Which among the following statements is NOT correct ? Packets sent on Ethernets are limited in size. Networks connected by Ethernets are limited in length to a few hundred meters. Ethernets use buses with multiple masters. Ethernets use circuit switching to send messages.
answered
in
Computer Networks
Jan 30, 2018
216
views
tbb-mockgate-4
computer-networks
lan-technologies
ethernet
10
votes
15
Test by Bikram | Mock GATE | Test 4 | Question: 26
Consider the languages $A$ and $B$, each over the alphabet set $\left \{ a,b \right \}$. Here, $B=\{ w \mid w$ contains some $x \in A$ as a sub-string $\}.$ Which of the following is TRUE about $A$ and $B$? If $A$ is regular, ... then $B$ is recursive. If $A$ is context-free, then $B$ is context-free. II only II and III I and III only I, II and III
answered
in
Theory of Computation
Jan 30, 2018
427
views
tbb-mockgate-4
theory-of-computation
identify-class-language
2
votes
16
Test by Bikram | Mock GATE | Test 4 | Question: 59
Fill in the blank with the most meaningful word: Wasim had not eaten anything the whole day due to office work. By the time he got home, he was ______. blissful foodly ravenous connotative
answered
in
Verbal Aptitude
Jan 30, 2018
81
views
tbb-mockgate-4
verbal-aptitude
most-appropriate-word
6
votes
17
TIFR CSE 2018 | Part B | Question: 4
The notation "$\Rightarrow$" denotes "implies" and "$\wedge$" denotes "and" in the following formulae. Let $X$ denote the formula: $(b \Rightarrow a ) \Rightarrow ( a \Rightarrow b)$ Let $Y$ denote the formula: ... is not satisfiable. $X$ is not tautology and $Y$ is satisfiable. $X$ is a tautology and $Y$ is satisfiable,
answered
in
Mathematical Logic
Jan 29, 2018
1.4k
views
tifr2018
mathematical-logic
propositional-logic
2
votes
18
solve
In how many ways can we distribute 77 apples and 66 oranges among 44 children so that each child gets at least one apple? solve by generating function along with approach thanks
answered
in
Mathematical Logic
Jan 28, 2018
435
views
generating-functions
discrete-mathematics
0
votes
19
Gateforum
Which of the following is used to write both safe and unsafe expression? (A) SQL (B) Relational Algebra (C) Relational Calculus (D) Both B and C
answered
in
Databases
Jan 23, 2018
265
views
gateforum-test-series
4
votes
20
Test by Bikram | Mock GATE | Test 1 | Question: 38
A radix sort is to be used to sort the file of non-negative integers shown below into ascending order. What would the order of the numbers be after one pass of the algorithm? $12$ $37$ $42$ $9$ $5$ $7$ $50$ $40$ $45$ $92$ $12$ $37$ $42$ $40$ $45$ $5$ $50$ $7$ ... $12$ $42$ $92$ $5$ $45$ $37$ $7$ $9$ $40$ $50$ $12$ $42$ $92$ $5$ $45$ $7$ $37$ $9$
answered
in
GATE
Jan 20, 2018
263
views
tbb-mockgate-1
sorting
radix-sort
algorithms
2
votes
21
Test by Bikram | Mock GATE | Test 1 | Question: 28
Find True $\left ( T \right )$ or False $\left ( F \right )$of the following statements : If $A$ is recursive then complement of $A$ is also recursive If $A$ and $B$ are recursive sets then $A$ intersection $B$ is not always is recursive set. Every recursive set is recursive enumerable and vice-versa $TTT$ $TFT$ $TFF$ $FFT$
answered
in
GATE
Jan 20, 2018
160
views
tbb-mockgate-1
recursive-and-recursively-enumerable-languages
theory-of-computation
1
vote
22
True or false
$S_1$: When the write-through protocol used in the simultaneous access memory organization then the hit ratio for write request is 100%. $S_2$: Conflict and Inference misses can be reduced by double the associativity of a cache design. $S_3$: In ... are required in the direct, associative and set associative cache designs to replace the cache blocks. Which of the following is false?
answered
in
CO and Architecture
Jan 18, 2018
1.7k
views
cache-memory
write-through
write-back
direct-mapping
21
votes
23
TIFR CSE 2017 | Part A | Question: 4
Which of the following functions asymptotically grows the fastest as $n$ goes to infinity? $(\log \: \log \: n)!$ $(\log \: \log \: n)^ {\log \: n}$ $(\log \: \log \: n)^{\log \: \log \: \log \: n}$ $(\log \: n)^{\log \: \log \: n}$ $2^{\sqrt{\log \: \log \: n}}$
answered
in
Algorithms
Jan 12, 2018
3.1k
views
tifr2017
algorithms
asymptotic-notations
30
votes
24
GATE CSE 1991 | Question: 1,vi
Consider the following PASCAL program segment: if i mod 2 = 0 then while i >= 0 do begin i := i div 2; if i mod 2 < > 0 then i := i - 1; else i := i – 2; end; An appropriate loop-invariant for the while-loop is ________
answered
in
Programming
Jan 11, 2018
3.1k
views
gate1991
programming
loop-invariants
normal
fill-in-the-blanks
0
votes
25
IES 2018 Memory hit miss ratio
Consider that a level of the memory hierarchy has a hit rate of 80%. Memory requests take 10 ns to complete if they hit in the level, and memory requests that miss in the level take 100 ns to complete. The average access time of the level is (a) 110 ns (b) 100 ns (c) 80 ns (d) 28 ns
answered
in
CO and Architecture
Jan 9, 2018
198
views
co-and-architecture
ies
ies-2018
0
votes
26
IES 2018 Program Structure
A program structure that permits repeated operation of a particular sequence of instructions is known as (a) subroutine (b) loop (c) module (d) microprogramming
answered
in
Programming
Jan 9, 2018
280
views
ies
ies-2018
programming
7
votes
27
Test by Bikram | Computer Networks | Test 1 | Question: 17
A message bit stream is $101101101$, the bit pattern will be if message is transmitted with bit stuffing and a flag bit of $0111$___________
answered
in
Computer Networks
Jan 2, 2018
264
views
tbb-cn-1
numerical-answers
5
votes
28
Test by Bikram | Computer Networks | Test 1 | Question: 14
In a class B network subnet mask for $200$ subnets each with $220$ systems will be $255.255.255.0$ $255.255.0.0$ $255.255.224.0$ $255.0.0.0$
answered
in
Computer Networks
Jan 2, 2018
270
views
tbb-cn-1
subnetting
9
votes
29
ISRO-DEC2017-37
A two-way set associative cache memory unit with a capacity of $16\, KB$ is built using a block size of $8\, words.$ The word length is $32-bits.$ The physical address space is $4\, GB.$ The number of bits in the TAG, SET fields are $20,7$ $19,8$ $20,8$ $21,9$
answered
in
CO and Architecture
Dec 20, 2017
1.9k
views
isrodec2017
cache-memory
3
votes
30
NIELIT 2017 DEC Scientist B - Section B: 34
The condition for total participation of entity in a relationship is _______. Maximum cardinality should be one Minimum cardinality should be one Minimum cardinality should be zero None of the options
answered
in
Databases
Dec 19, 2017
1.6k
views
nielit2017dec-scientistb
databases
relational-model
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