The third term of a G.P. is 4, the product of the first five terms is ____________.
Given third term of G.P is 4
Let a be the first term of G.P and r denote the common ratio.
Then second term is ar
Third term is ar
fourth term is ar and fifth term is ar .
Since ar = 4
Product of first 5 terms is a. ar. ar ar ar
= a r
Hence, product of first 5 terms = 45