Question

The sum of the first 8 terms in a geometric sequence with common ratio 2 is 1,785. What is the third term?

Answer 1

28

Explanation:

x+2x+4x+8x+16x+32x+64x+128x = 1785

255x = 1785

1785/255=7

1) 7

2) 14 (7*2)

3) 28 (14*2)