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Find the common ratio of the geometric sequence: 7, -28, 112?

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Find the common ratio in the geometric sequence: 7, -28, 112...

asked May 3, 2014 in GEOMETRY by anonymous

1 Answer

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The geometric sequence is 7, -28 , 112

Common ratio(r) in geometric sequnce = T2 / T1

Where T1,T2 are first term and second term.

r = -28/7

Common ratio r = -4.

answered May 3, 2014 by david Expert

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