Question

Six numbers are in G.P such that their product is 512 iſ the fourth number is 4, then the second number is​​

Answer 1

Answer:

let the GP series be

1/a^2, 1/a, 1, a, a^2, a^4

product of these numbers=a^3

a^3=512=8^3

a=8

a is the 4th number

second number is 1/a

so if 4th number is 4

then second number is 1/4