# Find the 10th term and common ratio of the geometric sequence .

Given:

; (where, n = 1,2,……n-1)

Now, taking n = 3.

r = -2

Also, an = a1rn-1 (n = no. of term and a1 = first term of G.P)

10th term (a10 = a1r9)

a10 = -27

common ratio = -2 and 10th term = -27

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