Question

The formula for the nth term b of a geometric series is b=ar^n-1. Find n when b=1,024, a=16 and r=2.

Answer 1

7

Explanation:

Answer 2

1024=16*2^n-1
1024/16=2^n-1
Log(1024/16)=(n-1)*log(2)
n=(log(1,024÷16)÷log(2))+1
n=7