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Question

Consider the following statements:
1. 133 cannot be written as a Terminating decimal.
2. 215 can be written as a Terminating decimal.
3. 116 can be written as a Terminating decimal.
Which of the statements given above is/are correct?

A
1 only
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B
2 only
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C
1 and 3 only
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D
2 and 3 only
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Solution

The correct option is C 1 and 3 only
For a rational number to have a terminating decimal expansion, the denominator has to be of the form 2m×5n
Where m and n are whole numbers
Here, in
133
Denominator, 33=3×11
So, non-terminating decimal expansion
215
Denominator, 15=3×5
So, non-terminating decimal expansion
116
Denominator, 16=24
Hence, it will have a terminating decimal expansion.
Hence, correct option is C

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