Answers

2014-04-24T12:55:10+05:30
If you double the last digit and subtract it from the rest of the number and the answer is:

ex 672/7     double 2 is 4 67-4=63
63/9=7 then 627 is divisible by 7
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oh thanks!!! are u sure these will work for every number.
2014-04-25T21:27:05+05:30
First plus the even number then odd number and then minus both
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