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What is the common ratio for the geometric sequence 3,12,48,192

What is the common ratio for the geometric sequence 3,12,48,192
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5 votes
What is the common ratio for the geometric sequence 3,12,48,192

asked
User Rsvay
by
8.1k points

2 Answers

4 votes
I got the ratio is 4.
answered
User Mod
by
7.8k points
4 votes
Okay, so try dividing a2 from a1 (to find geometric ratio, divide a2 from a1 :) )
12 ÷ 3 = 4
See if the other numbers have the same geometric ratio.
48 ÷ 12 = 4
192 ÷ 48 = 4
The common ratio is 4.
answered
User VinhNT
by
8.2k points
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