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Suppose m boys and m girls take their se...

Suppose m boys and m girls take their seats randomly around a circle. The probability of their sitting is `(.^(2m-1)C_m)^(-1),` when

A

no two boys sit together

B

no two girls sit together

C

boys and girls sit alternately

D

all the boys sit together

Text Solution

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The correct Answer is:
(a,b,c)
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