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by Brian Gladman on September 18, 2020

Sunday Times Teaser 3026 – Party Time

by Graham Smithers

Published Sunday September 20 2020 (link)

A four-digit number with different positive digits and with the number represented by its last two digits a multiple of the number represented by its first two digits, is called a PAR.

A pair of PARs is a PARTY if no digit is repeated and each PAR is a multiple of the missing positive digit.

I wrote down a PAR and challenged Sam to use it to make a PARTY. He was successful.

I then challenged Beth to use my PAR and the digits in Sam’s PAR to make a different PARTY. She too was successful.

What was my PAR?

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