Question
a.
n! ⁄ r!(n - r)!
b.
n! ⁄ r!(n + r)!
c.
r! ⁄ n!(n - r)!
d.
r! ⁄ n!(n + r)!
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Q. According to combination rule, if the total number of outcomes are 'r' and distinct outcome collection is 'n' then combinations are calculated as
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