Just one 2-digit number has this property:
- when 2 is subtracted from it and the result doubled, it becomes the same 2-digit number with its digits reversed.
What is it?
The 7puzzle Challenge
The playing board of the 7puzzle game is a 7-by-7 grid of 49 different numbers, ranging from 2 up to 84.
The 1st & 5th rows contain the following fourteen numbers:
2 6 7 9 14 15 16 21 22 40 50 72 81 84
Which three different numbers from the list have a sum of 77?
. . . can be found when clicking this.