

MCQOPTIONS
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1. |
According to combination rule, if the total number of outcomes are 'r' and distinct outcome collection is 'n' then combinations are calculated as |
A. | n! ⁄ r!(n - r)! |
B. | n! ⁄ r!(n + r)! |
C. | r! ⁄ n!(n - r)! |
D. | r! ⁄ n!(n + r)! |
Answer» B. n! ⁄ r!(n + r)! | |