## Brain-Teaser 467

**From The Sunday Times, 10th May 1970** [link]

There was a christening at our house last Sunday and there were three visitors’ cars in the drive.

The car registration numbers of these three cars (disregarding any letters) each a three-digit prime number and among these numbers each of the digits 1 to 9 was used once only.

This in itself was quite remarkable, but the sum of there three three-digit primes gave the three digit registration number of my own car.

What were the three registration numbers of the visitors’ cars?

[teaser467]

## Jim Randell 7:49 am

on28 March 2019 Permalink |We can use the [[

`SubstitutedExpression()`

]] solver from theenigma.pylibrary to solve this puzzle.This run-file executes in 222ms.

Run:[ @repl.it ]Solution:The registration numbers are: 149, 263, 587.So, the setters registration number is 999.

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## GeoffR 4:00 pm

on28 March 2019 Permalink |LikeLike