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Question

If {x} denotes the fractional part of x then {32n8},nϵN,is

A
38
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B
78
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C
18
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D
none of these
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Solution

The correct option is C 18
Given, 9n8
=(1+8)n8
=1+8k8 where kϵN.
=18+k.
Hence fractional part is 18.

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