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01-10-2018
Mathematics

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What is the next number in the pattern? 4, -12, 36, -108, k

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tramserran tramserran

01-10-2018

This is a geometric sequence where r = -3.

4 x -3 = -12

-12 x -3 = 36

36 x -3 = -108

-108 x -3 = 324

Answer: 324

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