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Not all a's are in (Posted on 2018-02-06)

A four-digit PIN number aabb, where a and b are distinct digits, is a multiple of 15.

Which values of a are not possible?

See The Solution Submitted by Ady TZIDON

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Puzzle Answer

Comment 4 of 4 |

The required distinct values of a are:

8, 5 , 2, 0

*** I sincerely hope to posit a suitable explanation to this in future.

Posted by K Sengupta on 2022-06-01 23:04:36

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