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Find the 12th term of the geometric sequence 5, -25, 125, ...5,−25,125,

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Find the 12th term of the geometric sequence 5, -25, 125,

no way that entire set of terms is a GP.
Taking just the 1st two terms, r = -5
So,
a12 = 5 * (-5)^11 = -5^12

Find the 12th term of following.-1,2,5

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