Q. 184.8( 4 Votes )

The third term of G.P. is 4. The product of its first 5 terms is
A. 43

B. 44

C. 45

D. None of these

Answer :

Given: Third term of G.P, T3 = 4

To find: Product of first five terms


We know that,


Tn = arn – 1


It is given that, T3 = 4


ar3 – 1 = 4


ar2 = 4 …(i)


Product of first 5 terms = a × ar × ar2 × ar3 × ar4


= a5r1+2+3+4


= a5r10


= (ar2)5


= (4)5 [from (i)]


Hence, the correct option is (c)

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