Question

Which of the following is a geometric sequence where a1 = 4 and r = 3?

A) 4, 7, 10, 13, . . .
B) 3, 7, 11, 15, . . .
C) 4, 12, 36, 108, . . .
D) 3, 12, 48, 192, . . .

Answer 1

C

Explanation:

G.P= a,ar,ar^2,ar^3,...,

a1=4

a2=4×3=12

a3=4×9=36

a4=4×27=108

Answer 2

C 4,12,36 108

Explanation:

the answer is above.