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Question

If N is the sum of first 13986 prime numbers, then N is always divisible by:

A
6
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B
4
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C
8
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D
none of these
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Solution

The correct option is D none of these
13986 prime numbers include 2 and 13985 odd prime numbers.
The sum of 13985 odd numbers is an odd number (x).
The sum of that odd number and 2 is another odd number (y).

y, being an odd number, is not divisible by 2 or any of its multiples.

Thus, the sum of first 13986 prime numbers is not divisible by either 4, 6 or 8.

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