Question

Which of the following is not a geometric sequence?
A. 1, 2, 4, 8
B. 3, 1, -1,-3
C. ½, ¼, 1/8, 1/16
D. 216, 72, 24, 8

Answer 1

a

Answer 2

in a geometric sequence
\[\frac{2nd-term}{1st-term}=\frac{3rd-term}{2nd-term}......\]

Answer 3

@codeblue11 don't give the answers directly

Answer 4

@goformit100 ok sorry

Answer 5

and your wrong @codeblue11

Answer 6

(2/1) = (4/2) = (8/4) = 2

Answer 7

So I should just follow that pattern with all the possible choices until one doesn't work out?

Answer 8

yep
we know 1 is geometric
now look at 2
does (1/3) = (-1/1) = (-3/-1)?

Answer 9

No, I don't think so.

Answer 10

you don't think?
does (1/3) = (-1/1)?

Answer 11

1/3 is .33 and -1/1 is -1.

Answer 12

So then it would be B.

Answer 13

correct