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The correct answer is:
but not by
Given,
Now
are divisible by , as will give remainder as and will give remainder as when divided by , so combined will give remainder Now,
are divisible by , is divisible by if is even,
So given number is divisible byas it is divisible by both, Now,
, dividing by we get,
Now when
divided by will give remainder as And
, when divided by we get,
So, when
divided by will give remainder as Similarly
will give remainder And
will give remainder, So combining all we get,
Not divisible by , so it will not be divisible by
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