Sequences and Series 3 Question 13

13.

The third term of a geometric progression is 4 . The product of the first five terms is

(a) 43

(b) 45

(c) 44

(d) None of these

(1982, 2M)

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Answer:

Correct Answer: 13. (b)

Solution:

  1. Here, t3=4ar2=4

Product of first five terms =aarar2ar3ar4

=a5r10=(ar2)5=45



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