Today’s Challenge
One of our popular MATHELONA challenges awaits you, can you complete this by making all four lines work out arithmetically? Replace the 16 ◯’s with digits 0 to 9, but each digit can only be inserted a maximum of twice.
◯ + ◯ = 8 = ◯ + ◯
◯ + ◯ = 8 = ◯ – ◯
◯ + ◯ = 8 = ◯ × ◯
◯ + ◯ = 7 = ◯ ÷ ◯
Further details of our pocket book of challenges can be found by clicking MATHELONA.
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 1st & 5th rows contain the following fourteen numbers:
2 6 7 9 14 15 16 21 22 40 50 72 81 84
Which three different numbers listed have a sum of 100?
Make 263 Challenge
Can you arrive at 263 by inserting 4, 5, 6, 7 and 8 into the gaps below?
(◯×◯×◯)+◯²+◯ = 263
Answers can be found here.
Click Paul Godding for details of online math tuition. Wherever you are in the world, please get in touch.
