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Question

# The rational number which can be expressed as a terminating decimal is:

A
16
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B
112
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C
115
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D
120
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Solution

## The correct option is C 120A terminating decimal is a decimal that ends after a finite number of steps. It's a decimal with a finite number of digits. Also, a decimal is terminating if in fully reducible form, the denominator is composed of 2's and 5's only.Here, only option D has a denominator composed of 2's and 5's, i.e. 20=22×5and 120=0.05.In all the other options, the decimal does not end with a finite number of digits and the denominator has factors other than 2's and 5's.Therefore, option D is correct.

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