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Questions by srestha
10
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1
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1
ISRO2020-63
What is the output in a $32$ bit machine with $32$ bit compiler? #include<stdio.h> rer(int **ptr2, int **ptr1) { int *ii; ii=*ptr2; *ptr2=*ptr1; *ptr1=ii; **ptr1*=**ptr2; **ptr2+=**ptr1; } void main(){ int var1=5, var2=10; int *ptr1=&var1,*ptr2=&var2; rer(&ptr1,&ptr2); printf("%d %d",var2,var1); } $60,70$ $50,50$ $50,60$ $60,50$
asked
in
Programming in C
Jan 12, 2020
3.9k
views
isro-2020
programming
programming-in-c
normal
pointers
12
votes
2
answers
2
ISRO2020-62
What is output of the following ‘C’ code assuming it runs on a byte addressed little endian machine? #include<stdio.h> int main() { int x; char *ptr; x=622,100,101; printf("%d",(*(char *)&x)*(x%3)); return 0; } $622$ $311$ $22$ $110$
asked
in
Programming in C
Jan 12, 2020
5.7k
views
isro-2020
programming
programming-in-c
normal
pointers
3
votes
1
answer
3
Mathematical Logic Ques:Self doubt
“Not every satisfiable logic is valid” Representation of it will be $1)\sim \left ( \forall S(x)\rightarrow V(x) \right )$ or $2)\sim \left ( \forall S(x)\vee V(x) \right )$ Among $1)$ and $2)$, which one is correct? and why?
asked
in
Mathematical Logic
Jun 4, 2019
983
views
discrete-mathematics
mathematical-logic
0
votes
0
answers
4
Doubt on a math question
Chk this question https://gateoverflow.in/100202/test-series-counting $1)$Can someone verify this ans?? See if $\left ( _{0}^{6}\textrm{C} \right )$ in one set, other set will contain $\left ( _{6}^{6}\textrm{C} \right )$ elements. right?? Now why do we again need $2^{n}$ ... meaning of it?? $2)$ How $\sum_{I=0}^{n}\left ( _{i}^{n}\textrm{C} \right ).2^{n-i}=3^{n}$??
asked
in
Set Theory & Algebra
Jun 4, 2019
222
views
discrete-mathematics
set-theory&algebra
4
votes
1
answer
5
Mathematics: GATE2017 EC-2-22
Consider the random process: $X\left ( t \right )=U+Vt$ where $U$ is zero-mean Gaussian random variable and $V$ is a random variable uniformly distributed between $0$ and $2.$ Assume $U$ and $V$ statistically independent. The mean value of random process at $t=2$ is ___________
asked
in
Probability
Jun 3, 2019
1.5k
views
gate2017-ec-2
probability
1
vote
0
answers
6
Aptitude Self Doubt
If altitude of equilateral triangle is given, then what is formula to find area of it??
asked
in
Quantitative Aptitude
Jun 2, 2019
628
views
quantitative-aptitude
0
votes
1
answer
7
Doubt on Bipartite Graph
What is T.C. to find maximum number of edges to be added to a tree so that it stays as a bipartite graph? Now my question is, why do we need to add edges to make a tree bipartite? A tree is already bipartite graph. Right?? Again how do we add edges in it?? Is BFS or DFS do any improvement in such a tree?? How to think such a question??
asked
in
Algorithms
Jun 2, 2019
627
views
algorithms
graph-algorithm
time-complexity
0
votes
1
answer
8
GATE 2019:EC
The value of integral $\int_{0}^{\pi }\int_{y}^{\pi }\frac{\sin x}{x}dxdy$ is equal to_________
asked
in
Linear Algebra
Jun 2, 2019
801
views
discrete-mathematics
3
votes
4
answers
9
GATE2017 EC
The rank of the matrix $\begin{bmatrix} 1 & -1 & 0 &0 & 0\\ 0 & 0 & 1 &-1 &0 \\ 0 &1 &-1 &0 &0 \\ -1 & 0 &0 & 0 &1 \\ 0&0 & 0 & 1 & -1 \end{bmatrix}$ is ________. Ans 5?
asked
in
Linear Algebra
Jun 1, 2019
2.5k
views
discrete-mathematics
matrix
2
votes
1
answer
10
Doubt on GATE Question
Read the statements: All women are entrepreneurs. Some women are doctors. Which of the following conclusions can be logically inferred from the above statements? All women are doctors All doctors are entrepreneurs All entrepreneurs are women Some entrepreneurs are doctors ... Is it because , if we make set of doctor as 0, then All doctors are entrepreneurs is meaningless.
asked
in
Mathematical Logic
Jun 1, 2019
555
views
discrete-mathematics
mathematical-logic
1
vote
1
answer
11
Mathematical Logic: Doubt on meaning of statement
The notation $\exists ! x P(x)$ denotes the proposition there exists a unique $x$ such that $P(x)$ ... What will be answer here?? Is the assumption only for left hand side and not right hand side??
asked
in
Mathematical Logic
May 31, 2019
854
views
mathematical-logic
discrete-mathematics
0
votes
1
answer
12
Agarwal Aptitude-C.I.
What is the difference between the compound interests on $Rs.5000$ for $1\frac{1}{2}$ years at $4$% per annum compounded yearly and half-yearly? See we know formula for compound interest $P\left ( 1+\frac{R}{100} \right )^{n}$ But when they calculating compound ... Do we need to calculate fraction power like this?
asked
in
Quantitative Aptitude
May 28, 2019
321
views
general-aptitude
0
votes
0
answers
13
Trigonometry-Doubt
$1)$What is the value of $\sin 15^{o}$ $\sin 15^{o}=\sin \left ( 60^{o}-45^{o} \right )$ $=\sin 60^{o}.\cos 45^{o}-\cos 60^{o}.\sin 45^{o}$ ... $=\frac{\sqrt{3}-1}{2\sqrt{2}}=0.258$ Is it correct? $2)$ $\sin 80^{o}$ value=_____________ Is it possible to do?
asked
in
Quantitative Aptitude
May 28, 2019
358
views
general-aptitude
0
votes
0
answers
14
Aptitude-(Recruitment Ques)
The value of $\sin 120^{o}+\sin 780^{o}-\cos 360^{o}$ $=(\sin (90^{o}\times 2)-60^{o})+\left ( \sin \left ( 90^{o}\times 8 \right )+60^{o} \right )-\left ( \cos (90^{o}\times 4)+0^{o} \right )$ $=\frac{\sqrt{3}}{2}+\frac{\sqrt{3}}{2}-1=0.73$ right??
asked
in
Quantitative Aptitude
May 28, 2019
326
views
general-aptitude
1
vote
1
answer
15
Aptitude-(recruitment exam)
The expression $\left ( 11.98\times 11.98+11.98\times a+0.02\times 0.02 \right )$ will be a perfect square for $’a’$ equal to _________ $a)0.02$ $b)0.2$ $c)0.04$ $d)0.4$
asked
in
Quantitative Aptitude
May 28, 2019
351
views
general-aptitude
0
votes
1
answer
16
Self-Doubt: Diagonalizable Matrix
$1)$ How to find a matrix is diagonalizable or not? Suppose a matrix is $A=\begin{bmatrix} \cos \Theta &\sin \Theta \\ \sin\Theta & -\cos\Theta \end{bmatrix}$ Is it diagonalizable? $2)$ What is it’s eigen spaces?
asked
in
Linear Algebra
May 27, 2019
1.3k
views
engineering-mathematics
linear-algebra
matrix
0
votes
1
answer
17
Probability question of CLRS
In a restaurant each of $n$ customer gives a hat to the hat check person. The hat check person gives the hat back to the customer in a random order. What is expected number of customer who get back their own hat?
asked
in
Probability
May 27, 2019
870
views
algorithms
probability
0
votes
3
answers
18
Self Doubt-Combinatory
In how many ways we can put $n$ distinct balls in $k$ dintinct bins?? Will it be $n^{k}$ or $k^{n}$?? Taking example will be easy way to remove this doubt or some other ways possible??
asked
in
Combinatory
May 25, 2019
647
views
discrete-mathematics
combinatory
1
vote
0
answers
19
Allen Career Institute:Circular Queue
$1)$How circular queue can be implemented? $2)$ For which data structure circular queue cannot be implemented? $(A)$Array $(B)$ Singly Linked List $(C)$ Doubly Linked List $(D)$ Stack
asked
in
DS
May 24, 2019
1.3k
views
data-structures
circular-queue
2
votes
3
answers
20
Made easy Test Series:Graph Theory+Automata
Consider a graph $G$ with $2^{n}$ vertices where the level of each vertex is a $n$ bit binary string represented as $a_{0},a_{1},a_{2},.............,a_{n-1}$, where each $a_{i}$ is $0$ or $1$ ... and $y$ denote the degree of a vertex $G$ and number of connected component of $G$ for $n=8.$ The value of $x+10y$ is_____________
asked
in
Graph Theory
May 23, 2019
949
views
made-easy-test-series
graph-theory
theory-of-computation
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