Question

Find the missing term of the geometric sequence. 3, _,12?

Answer 1

@hartnn @shamil98 @bibby help?

Answer 2

since it is given that its a geometric series, the ratio between the terms is equal.

Answer 3

so, you can say,
\(\Large \dfrac{12}{x}=\dfrac{x}{3}\)

find x from here.

Answer 4

[there are two solutions]

Answer 5

i got x=6

Answer 6

ofcourse.
one with positive common ratio and one with negative

Answer 7

only x= 6
?
any other value ?

Answer 8

negative six?

Answer 9

good work!

Answer 10

So this?\[\pm6\]

Answer 11

yes, both
3,6,12
and 3,-6,12 are valid

Answer 12

Thanks :)

Answer 13

welcome ^_^