Daily Archives: December 13, 2021

day/dydd 347 at 7puzzleblog.com

The Main Challenge How many 3-digit numbers contain at least two 7’s? The 7puzzle Challenge The playing board of the 7puzzle game is a 7-by-7 grid containing 49 different numbers, ranging from 2 up to 84. The 4th & 7th columns contain the … Continue reading

Posted in 7puzzleblog.com | Leave a comment