December 1, 2015

Homework Help: Maths

Posted by Ian on Friday, March 29, 2013 at 12:45am.

a and b are digits such that 120abŻŻŻŻŻŻŻŻ is a multiple of 3, 5 and 7. What is the value of abŻŻŻ?

Details and assumptions
abcŻŻŻŻŻ means 100a+10b+1c, as opposed to a×b×c. As an explicit example, for a=2,b=3,c=4, abcŻŻŻŻŻ=234 and not 2×3×4=24.

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