Question

15.
The following is a geometric sequence.
1, -2, 4, -8, 16,…
A. true
B. false

Answer 1

Do you know what a geometric sequence is?

Answer 2

no

Answer 3

It is where each term after the first is obtained by multiplying the preceding term by the same number

Answer 4

so like 2, 6, 18, 54,...
It is being multiplied by 3 each time

Answer 5

Oh okay

Answer 6

So will it be true ?

Answer 7

Do you notice any pattern above?

Answer 8

yeah its being multiplied by 2 each time

Answer 9

-2, and yes