Question

Which of the following is geometric sequence?

Answer 1

Choice C

Explanation:

A geometric sequence is usually one that multiply or divide to get to the next number in the sequence. So let's go through them to see which one gets multiplied since all of the choices are increasing.

Choice A:

`1^(+3),4^(+1),5^(+4),9^(+5),14`

Nope that's not what we're looking for.

Choice B:

`3^(+3),6^(+3),9^(+3),12^(+3),15`

This would be a perfect arithmetic sequence but not the type of sequence we are looking for.

Choice C:

`6^(*3),18^(*3),54^(*3),162`

Yes! See how this one is multiplying by 3 and not adding or subtracting.

Choice D:

`3^(+2),5^(+3),8^(+5),13^(+7),21`

Nope this is not it either.