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Question
Test the divisibility of the following numbers by 6:
251780
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Solution
A number is divisible by 6 if it is divisible by both 2 and 3.
Since 251780 is not divisible by 3, it is not divisible by 6.
Checking the divisibility by 3: The sum of the digits of the number, 2 + 5 + 1 + 7 + 8 + 0, is 23, which is not divisible by 3. So, the number is not divisible by 3.
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(b) 98671402
(c) 85492014
(d) none of these
