perplexus.info :: Just Math : Quadruple Digit Sum and Number Puzzle

Quadruple Digit Sum and Number Puzzle (Posted on 2016-06-01)

S(N) denotes the sum of the digits of a positive integer N.

Find the largest value of N such that:
N = 4*S(N)

No Solution Yet Submitted by K Sengupta

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Andwer

Comment 1 of 1

D1:

Must be a 2 digit number:

10x+y=4x+4y

6x=3y

48 is the biggest N possible

Posted by Ady TZIDON on 2016-06-01 08:18:47

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