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Question

If five geometric means are inserted between 8 and 5832, the fifth term in the geometric series is:

A
648
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B
832
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C
1168
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D
1944
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Solution

The correct option is A 648
Denote the terms in the geometric progression by
a1=8,a2=8r,.......,a7=8r6 = 5832.
r6=729;
r=3 and a5=8r4 = 648

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