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Let a1,a2,a3,a4,a5 be a G.P. Of positiv...

Let `a_1,a_2,a_3,a_4,a_5` be a G.P. Of positive real numbers such that A.M. Of `a_2 and a_4` is 117 and G.M. Of `a_2` and `a_4` is 108. Then A.M. Of `a_1` and `a_5` is :

A

145.5

B

108

C

117

D

144.5

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The correct Answer is:
A
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