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antiseptic1488 [7]
2 years ago
10

In a geometric sequence, a2 = 2, a3 = 20, & a4 = 200.

Mathematics
1 answer:
babymother [125]2 years ago
5 0

Answer:

the first one

the first one Step-by-step explanation:

the first one Step-by-step explanation:from the formula Un =ar^n-1

where a is 2

where a is 2 r = 20/2=10

where a is 2 r = 20/2=10 so Un= 10×2^n-1

that's all.....have fun

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