Question

If'a' is first term and 'r' is common ratio of a GP and a^9r^81= 512 then find 10th term.​

Answer 1

given that a^9.r^81=512

=> (a.r^9) ^9=(2) ^9

=> a. r^9=2

tenth term of GP with first term a and common ratio r=a.r^9

=> tenth term of GP is 2