7 term of the G P 2, 4, 8

2 answers

the numbers are doubling

2, 4, 8, 16, 32, ...
In G.P.

an = a • r^(n - 1 )

a = first term

r = common ratio

In this case:

a = 2 , r = 2 , n = 7

an = a • r^(n - 1 )

a7 = 2 • 2^6 = 2^7 = 128