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NIELIT STQC 2021 Quiz-11
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Question 1
M is a square matrix of order ‘n’ and its determinant value is 5 . If all elements of M are multiplied by 2, its determinant value becomes 40 . The value of ‘n’ is
Question 2
A 3 × 5 matrix has all its entries equal to 1. The rank of the matrix is
Question 3
A 4-ringed number lock has 10 digits on each ring. How many attempts at the maximum would have to be made before getting the right number?
Question 4
There are ten boys in a class. In how many ways can they be seated if three boys want to sit together?
Question 5
What is the output of below program?
#include <stdio.h>
int foo(int* a, int* b)
{
int sum = *a + *b;
*b = *a;
return *a = sum - *b;
}
int main()
{
int i = 0, j = 1, k = 2, l;
l = i++ || foo(&j, &k);
printf("%d %d %d %d", i, j, k, l);
return 0;
}
Question 6
The concept of order (Big O) is important because—
Question 7
Lock Point of a transaction occurs, when?
Question 8
1’s complement can be easily obtained by using _________
Question 9
Which of the following condition stands true for Bounded Waiting?
Question 10
Which of the following is equivalent regular expressions?
(i) ((01)*(10)*)*
(ii) (10 + 01)*
(iii) (01)* + (11)*
(iv) (0* + (11)* + 0*)*)
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GATE & PSU CSGeneralAug 9GATE & PSU CS