Which of the following rational numbers are having the terminating dec – InterviewSolution

1.

Which of the following rational numbers are having the terminating decimal expansion (with out actual division) a) 3/5 b) 7/20 c) 2/13 d) 27/40 e) 133/125 f) 23/7

Answer»

The prime FACTORS of 20 are both 2's and 5's. Hence 7 / 20 has a terminating decimal.

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