JEE Advanced 2020 Concept Recapitulation Test 2 Paper 2

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Question : 41 of 54

Marks: +1, -0

Probability if n heads in 2n tosses of a fair coin can be given by

∏r=0n(‌
2r−1
2r
)
∏r=1n(‌
n+r
2r
)
n
∑
i=0
(‌
‌nCr
2n
)2
‌
n
∑
i=0
(‌nCr)2
(
n
∑
r=0
‌2nCr)

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