What is the number of terms in this geometric series? 1 + 2 + 4 + ... + 64
What is the number of terms in this geometric series? 1 + 2 + 4 + ... + 64?
The quickest way to find the answer is to write out all the terms and count: 1 + 2 + 4 + 8 + 16 + 32 + 64.
There are 7 terms.
1+2+4+...+64
= 20+21+22+.....+26
Number of terms = 6+1 = 7
