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Find a12 in the sequence -4, 12, -36

Find a12 in the sequence -4, 12, -36
asked 34.0k views
1 vote
Find a12 in the sequence -4, 12, -36

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User Tarostar
by
8.0k points

1 Answer

4 votes
a12= 708588


Formula: a1 * r^n-1
a12= -4 * (-3) ^12-1
a12= -4 * (-177147)
a12= 708588
answered
User VeV
by
8.9k points
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