Question

In a g.p the 9th term is 32805 and 6th term is 1215 find the 12th term

Answer 1

Answer:

9th term is 32805

a9 = ar⁹_¹ = ar⁸ = 32805

6th term is 1215

a6 = ar⁶_1 = ar⁵ = 1215

by dividing

ar⁸/ar⁵ = 32805/1215

We get, r = 3

now substitute value of r in ar⁵ = 1215

then we will get, a = 5

now we have to find 12th term

a12 = ar¹²-¹ = ar¹¹ = 5×3¹¹ = 885735

Therefore the 12th term is 885735

HOPE IT HELPS U.....