Question

The following is a geometric sequence.
1, -2, 4, -8, 16,…

Answer 1

n'th term or sum ?

Answer 2

True or false

Answer 3

True

Answer 4

lol ok

find the ratio between each consecutive terms

if that ratio is same always, then it is a geometric sequence

Answer 5

is
-2/1 = 4/-2 = -8/4 = 16/-8
??
are all those ratios equal ?

Answer 6

so you understood, why it is a geometric sequence ?