Suppose n and p are unsigned int variables in a C program. We wish to set p to n C 3 . If n is large, which one of the following statements is most likely to set p correctly?

Correct Answer is : p = n * (n-1) / 2 * (n-2) / 3;

GATE Computer Science (CS) 2014 Shift 2 Solved Paper

Question : 21 of 65

Marks: +1, -0

Suppose n and p are unsigned int variables in a C program. We wish to set p to ⁿC₃. If n is large, which one of the following statements is most likely to set p correctly?

p = n * (n-1) * (n-2) / 6;
p = n * (n-1) / 2 * (n-2) / 3;
p = n * (n-1) / 3 * (n-2) / 2;
p = n * (n-1) * (n-2) / 6.0;

Validate

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