NIELIT STQC 2021 Quiz-11

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

A 3 × 5 matrix has all its entries equal to 1. The rank of the matrix is

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?

There are ten boys in a class. In how many ways can they be seated if three boys want to sit together?

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;

}

Lock Point of a transaction occurs, when?

Which of the following condition stands true for Bounded Waiting?

Which of the following is equivalent regular expressions?

(i) ((01)*(10)*)*

(ii) (10 + 01)*

(iii) (01)* + (11)*

(iv) (0* + (11)* + 0*)*)