Set Two Q14

[wvspidermonkey]

Q14:
C(m,n) = m! / [(m-n)! n!] for nonnegative integers m and n, m ≥ n. If C(5,3) = C(5,x) and x ≠ 3, what is the value of x?

A. 0

B. 1

C. 2

D. 4

E. 5

Formal answer: E

I don’t understand why the answer is 5.

[wvspidermonkey]

Please see attachment for Q14

[kevin]

Q14:
C(m,n) = m! / [(m-n)! n!] for nonnegative integers m and n, m ≥ n. If C(5,3) = C(5,x) and x ≠ 3, what is the value of x?

A. 0

B. 1

C. 2

D. 4

E. 5

Formal answer: E

I don’t understand why the answer is 5.


The answer is B