Today’s Challenge
What is the biggest number you can make when using these four digits once each
1 2 3 4
and following these rules:
- you can use brackets and + – × ÷ as often as you like,
- you cannot use any number more than once,
- you cannot use powers/indices,
- you cannot put numbers together (using 1, 2 and 3 to make 123, for example).
Good luck and enjoy!
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 4th & 7th rows contain the following fourteen numbers:
3 4 10 11 24 27 30 32 35 44 54 60 70 77
Find three different numbers that have a sum of 100.
Make 289 Challenge
Can you arrive at 289 by inserting 2, 3, 4, 6 and 7 into the gaps below?
(◯×◯–◯)²+◯²–◯² = 289
Answers can be found here.
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