Today’s Challenge
Follow the rules and eliminate numbers from a given list, except one. From the numbers 1-30 inclusive, delete:
- multiples of 5
- factors of 36
- numbers containing a ‘7’
- prime numbers
- even numbers
Which is the only number that remains?
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 1st & 7th rows of the playing board contain the following fourteen numbers:
2 4 9 11 14 15 22 24 27 30 40 70 72 77
Which three different numbers on the list have a sum of 100?
Make 123 Challenge
Can you arrive at 123 by inserting 3, 9, 10 and 12 into the gaps on each line?
- ◯×◯+◯÷◯ = 123
- ◯×◯+half(◯×◯) = 123
- (◯+◯)×◯+half◯ = 123
Answers can be found here.
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