Sunday Times Teaser 2619 – First and Last
by Graham Smithers
Published: 2 December 2012 (link)
A “First and last” number (FLN) is any number that is divisible by its first and last digits. Using each non-zero digit just once, I wrote down a 3-figure FLN followed by three 2-figure FLNs. Putting these in one long line in that order gave me a 9-figure FLN. When the first and last digits were removed from this 9-figure number, I was left with a 7-figure FLN.
What was the 9-figure number?
2 Comments
Leave one →
Here is my solution:
Another version using permutations: