Here we have an interesting property of any three digit whole number.
Take any three digit whole number.
For example: 935
Repeat the digits and write to the next to the above number.
935935.
The original number became a six digit number.
When such six digit number is divided by 1001 we get the answer 935
Other examples:
738738÷1001=738
135135÷1001=135
777777÷1001=777
This trick is applicable to any three digit whole number.
Note :-Prime factors of 1001 are7,13,and 11.
Any such six digit whole number is divisible by 7,11,13,77,91,143,and1001.
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