Enigma 524: Spot check
4 November 2019
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From New Scientist #1676, 5th August 1989 [link]
I’m in the middle of a game of dominoes and I’m looking at the four dominoes laid end-to-end on the table.
If I replace the number of spots by digits and then read off the four-figure number formed by the first two dominoes, I get a perfect square. (For example, had the dominoes been:
then I’d have read the number 1220).
The four-figure number formed by the middle two dominoes (which would be 2005 in the above example) is a prime.
And the total number of spots on the four dominoes is a perfect square.
What are the four dominoes.