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प्रश्न
Choose the correct alternative:
The product of first n odd natural numbers equals
विकल्प
2nCn × nPn
`(1/2)^"n" xx ""^(2"n")"C"_"n" xx ""^"n""P""n"`
`(1/4)^"n" xx ""^(2"n")"C"_"n" xx ""^(2"n")"P""n"`
nCn × nPn
उत्तर
`(1/2)^"n" xx ""^(2"n")"C"_"n" xx ""^"n""P""n"`
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