WBJEE 2012 Math Solved Paper

© examsiri.com

Question : 3 of 80

Marks: +1, -0

The sum of the series

1+‌

1

2

‌nC1+‌

1

3

‌nC2+....+‌

1

n+1

‌nCn

is equal to

‌
2n+1−1
n+1
‌
3(2n−1)
2n
‌
2n+1
n+1
‌
2n+1
2n

Go to Question:

Prev Question

Next Question