According to combination rule, if the total number of outcomes are 'r' – 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)!

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