Number puzzle asks for lowest N starting with 4
5 reported
A puzzle published by The Guardian on June 8, 2026, asks readers to find the lowest possible value of a number N that begins with the digit 4. The condition is that moving the 4 to the end of the number creates a new number that is exactly one quarter of N. The puzzle is described as originating from the Moscow Mathematical Olympiad 1983, and was shared via @mathematicsproblems and Kevin Gately. The article provides a hint suggesting readers try two-digit, then three-digit numbers until a solution is found. The solution is scheduled to be posted at 5pm UK time. The puzzle is presented as a challenge for fans of the number 4.
What’s reported
The puzzle asks for the lowest possible value of N, where N begins with 4.
Moving the 4 to the end of N creates a new number that is a quarter of N.
The puzzle is from the Moscow Mathematical Olympiad 1983.
It was shared via @mathematicsproblems and Kevin Gately.
The solution will be posted at 5pm UK time.
Sources: The Guardian
