What is the tenth term of the geometric sequence 3, 6, 12, 24, 48, … ?

asked Jun 3, 2018 190k views

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by Crays

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5 votes

Answer:

1536

Explanation:

192

384

768

1536

8.0k points

4 votes

Let common ratio be r, then
r=a2/a1=6/3=2
a(i)=a1*r^(i-1)
a(10)=a1*2^(10-1)
=3*(2^9)
=3*512
=1536

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