IEEE Weekly Puzzle

31 March 2014 Comments Off on IEEE Weekly Puzzle

#18 – Four-Digit Number

We have a four-digit number, each of whose **************** digits is a different number. The number itself (ABCD) and its reversed version (DCBA) are divisible by the sum of its digits. What is the largest number that satisfies these conditions?

The Prize for This Question: Rubik’s Race

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This question was prepared by Emrehan Hal?c?, president of the Turkey Intelligence Foundation, for Bilkent IEEE.