Today’s Challenge
Using the numbers 4, 5 and 6 once each, together with + – × ÷, which THREE target numbers from the following list are NOT mathematically possible to make?
2 3 4 5 6 7 10 12 14 15 19 20 26 29 30
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
What is the difference between the highest and lowest multiples of 7?
Make 50 Challenge
Can you arrive at 50 by inserting 2, 5, 10 and 20 into the gaps on each line?
- ◯²–◯×◯÷◯ = 50
- (◯+◯)×◯+◯ = 50
- ◯⁵+◯–◯÷◯ = 50
Answers can be found here.
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