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If sn=sum(r=0)^n1/(""^nCr)and tn=sum(r=0...

If `s_n=sum_(r=0)^n1/(""^nC_r)and t_n=sum_(r=0)^nr/(""^nC_r),` then `t_n/s_n` is equal to :

A

`n-1`

B

`1/2n-1`

C

`n/2`

D

`(2n-1)/2`

Text Solution

Verified by Experts

The correct Answer is:
C
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