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by Brian Gladman on September 24, 2017

Sunday Times Teaser 2870 – Lucky Dip

by Andrew Skidmore

Published September 24 2017 (link)

My bank PIN consists of four different digits in decreasing order. I used this PIN to help me choose my six lottery numbers. I wrote down all the two-figure numbers that used two different digits from the PIN. Just six of those numbers were in the range from 10 to 49 and so they were my lottery choices. In fact the sum of the six is a perfect square. If you knew that square it would now be possible to work out my PIN.

What is my PIN?

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