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The second and fourth terms of an exponential sequence (G.P)...

The second and fourth terms of an exponential sequence (G.P) are 29 and 881 respectively. Find the sixth term of the sequence 

A.

8132

B.

98

C.

14

D.

32729

Correct answer is D

ar = 29 .....(i) 

ar3 = 881 ......(ii) 

ar3ar=881×92 

r2=49 

r = 49 

= 23 

ar = 29 

a(23) = 29

a = (23) = 29

a = 29×32

a = 13 

Tr = ar5 = (13)(25)5 

= 32729