<PRE><B>Question 785747</B>
391758-394915 ==3157


391 758 and 394 915 have the same remainder when divided by a certain three digit number.

The difference between 391 758 and 394 915  has remainder  zero when divided by this number.

 Factors of 3 157 = 7*11*41 so 3 157 

77*41 Or
287 *11 
OR 11*44=451
either 287 is the number OR 451 is the number since divisor is 3 digit.

Divide both the numbers by 287 and 451. to find out which gives same remainder

</PRE>