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Question

Any rational number x in the form p/q (where p and q are co primes), whose decimal expression terminates. Which of the following represents the correct form of prime factorisation of q?



Your Answer
A

5n, where n is a whole number

Your Answer
B

1

Correct Answer
C

2m x 5n , where m and n are the whole numbers

Your Answer
D

2n, where n is a whole number


Solution

The correct option is C

2m x 5n , where m and n are the whole numbers


2m x 5n , where m and n are the whole numbers

Any number can be represented as a terminating decimal, if its denominator can be expressed in form of 2m x 5n

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