. . . is a tricky number puzzle from Mathematically Possible, my board game that is great for arithmetic and strategy:
Using the numbers 4, 5 and 10 once each, with + – × ÷ available, can you list the TEN different target numbers that are possible to achieve from 1 to 30 inclusive?
Got an answer? Why not leave a comment below or e-mail me at firstname.lastname@example.org.
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 3rd & 7th columns of the playing board contain the following fourteen numbers:
4 5 9 12 15 17 24 28 32 35 50 66 80 81
What is the product of the two prime numbers in the list?
. . . can be found when clicking this.