Question

Which sequence below represents an exponential sequence? A) {2, 6, 10, 14, 18,...} B) {3, 5, 9, 16, 24,...} C) {4, 8, 24, 96,....} D) {256, 64, 16, 4,....}

Answer 1

Answer:d

Explanation:

Clearly from observation option D is the exponential sequence

256,64,16,4 is decreasing exponential function

`\Rightarrow (256)/(64)=(4^4)/(4^3)=4`

`\Rightarrow (64)/(16)=4`

for other option they simply follow an AP

2,6,10,14,18

common difference d=4