Today’s Challenge
. . . is a tricky number puzzle from Mathematically Possible, our 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?
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?
Make 335 Challenge
Can you arrive at 335 by inserting 3, 4, 5, 6 and 7 into the gaps below?
[◯³+◯×(◯–◯)]×◯ = 335
Answers can be found here.
Click Paul Godding for details of online math tuition. Wherever you are in the world, please get in touch.
