The Main Challenge
When using the numbers 2, 5 and 7 once each, with + – × ÷ available, can you list the TWELVE target numbers from 1-30 that are mathematically possible to achieve?
Full details of our popular arithmetic and strategy board game can be found by clicking Mathematically Possible.
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 3rd & 7th rows contain the following fourteen numbers:
4 11 13 24 25 27 30 36 42 45 66 70 77 80
Which three different numbers have a sum of 77?
The Factors Challenge
Which of the following numbers are factors of 257?
3 5 7 9 11 13 None of them
The Mathematically Possible Challenge
Based on our best-selling arithmetic board game.
Using 5, 8 and 11 once each, with + – × ÷ available, which are the only TWO numbers it is possible to make from the list below?
2 3 5 7 11 13 17 19 23 29
#PrimeNumbers
The Target Challenge
Can you arrive at 257 by inserting 2, 4, 5, 8 and 9 into the gaps below?
- ◯²×◯+◯×(7+◯+◯) = 257
Answers can be found here.
Click Paul Godding for details of online maths tuition.
