Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

You must login to ask a question.

You must login to add post.

Please briefly explain why you feel this question should be reported.

Please briefly explain why you feel this answer should be reported.

Please briefly explain why you feel this user should be reported.

Ask A Question

Charu Madan

Asked: 2 years ago2022-11-11T19:40:41+05:30 2022-11-11T19:40:41+05:30In: General Awareness

The sum of the first 20 terms of the series `1+3/2+7/4+15/8+31/16+…` is:
A. `2(n-1)+(1)/(2n-1)`
B. `2n-(1)/(2^(n))`
C. `2+(1)/(2^(n))`
D. `2n-1+(1)/(2^(n))`

Leave an answer

The sum of the first 20 terms of the series `1+3/2+7/4+15/8+31/16+…` is:A. `2(n-1)+(1)/(2n-1)`B. `2n-(1)/(2^(n))`C. `2+(1)/(2^(n))`D. `2n-1+(1)/(2^(n))`