Question

Sum of the series till n terms asked in the last question

Answer 1

The formula to find the sum of the first n terms of our sequence is n divided by 2 times the sum of twice the beginning term, a, and the product of d, the common difference, and n minus 1. The n stands for the number of terms we are adding together.

Answer 2

Answer:

LAST QUESTION WAS 2,4,6,8,10.....UPTO N TERMS

r=2

a=2

sum=2(2^n-1)/1

so sum is 2(2^n-1)

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