Question
What will be the remainder when `17^200` is divided by 18 ?
Answer: Option C
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When n is even , (`x^n` - `a^n` ) is completely divisible by (`x` + a)
(`17^200` - `1^200`) is completely divisible by ( 17 + 1), i.e., 18
`rArr` (`17^200` - 1) is completely divisible by 18
`rArr` On dividing `17^200` by 18, we get 1 as remainder.
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