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Cards are drawn one at random from a wel...

Cards are drawn one at random from a well shuffled full pack of 52 playing cards until 2 aces are obtained for the first time. If `N` is the number of cards required to the drawn, then show that `P {N=n}=((n-1)(52-n)(51-n))/(50xx49xx17xx13)`, where `2ltnlt50`

A

`((n-1)(52-n)(51-n))/(50.49.17.13)`

B

`(.^(4)C_(1).^(48)C_(n-2))/(.^(52)C_(n-1)).(3)/(53-n)`.

C

`((48)!)/((n-2)(50-n)!)`

D

none of these

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The correct Answer is:
A, B
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