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Anton [14]
2 years ago
15

•Sequences and functions

Mathematics
1 answer:
ollegr [7]2 years ago
6 0
The answer is D

when it comes to geometric progression the common ratio (r) must be the same.

to find r, use this formula :

r = T2/T1

= 12/72 = 1/6

= 2/12 = 1/6
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