Today’s Challenge
Insert the 12 numbers 1, 1, 2, 2, 2, 3, 5, 5, 6, 7, 8 and 8 so that all three lines work out arithmetically:
◯ + ◯ = 6 = ◯ – ◯
◯ + ◯ = 14 = ◯ × ◯
◯ + ◯ = 5 = ◯ ÷ ◯
If you enjoyed trying this puzzle, visit our MATHELONA page for further details.
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 5th & 6th rows of the playing board contain the following fourteen numbers:
5 6 7 12 16 18 20 21 33 49 50 56 81 84
What is the difference between the highest and lowest odd numbers?
Make 14 Challenge
Can you arrive at 14 by inserting 2, 4, 5 and 5 into the gaps on each line?
- ◯+◯+◯+√◯ = 14
- ◯²–(◯+◯+◯) = 14
- (◯+◯÷◯)×◯ = 14
Answers can be found here.
Click Paul Godding for details of online maths tuition. Wherever you are in the world, please get in touch.
