Q.

The eighth term of a geometric progression is 128 and common ratio is 2. The product of the first five terms is

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a

46

b

45

c

43

d

48

answer is B.

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Detailed Solution

ar7=128=27 and r=2⇒a=1Product of first five terms =a5r10=1024
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The eighth term of a geometric progression is 128 and common ratio is 2. The product of the first five terms is