Escribe dos numeros cuyo maximo comun divisor sea 210 y que esten entre 10000 y 11000

Let and be two numbers, such that

If and have no common factors, the greatest common factor between and is obviously 210.

If we divide the inequalities above by 210, we see that

And rounding to the nearest integer, we deduce that and must be between 48 and 52.

We may pick and , because they have no common factors. So, our numbers would be

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