WBJEE 2013 Math Solved Paper

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Question : 57 of 80

Marks: +1, -0

The sum of the series

1

1×2

25

‌

C0 +

1

2×3

25

‌

C1 +

1

3×4

25

‌

C2 + ..... +

1

26×27

25

‌

C25

227−1
26×27
227−28
26×27
1
2
(
226+1
26×27
)
236−1
52

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