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The combinatorial coefficients ""^(n – 1...

The combinatorial coefficients `""^(n – 1)C_(p)` denotes

A

The number of ways in which n things of which p are alike and rest different can be arranged in a circle

B

The number of ways in which p different things can be selected out of n different thing if a particular thing is always excluded

C

Number of ways in which n alike balls can be distributed in p different boxes so that no box remains empty and each box can hold any number of balls

D

The number of ways in which (n – 2) white balls and p black balls can be arranged in a line if no two black balls are together, balls are all alike except for the colour

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The correct Answer is:
B, D
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