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Number Theory 2

General Questions QA
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Number Theory 2

Postby sadmin » Tue Feb 26, 2013 9:31 am

A positive integer x where 100 ≤ x ≤ 200 is expressed in base 2, base 8 and base 12 notations. It is found that in exactly two out of the three cases, the leading digit is 1 and in exactly two out of the three cases, the trailing digit is 1. Then the value of x can be
1) 97
2) 109
3) 151
4) 171
5) None of these
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