The Main Challenge
All the following 3-digit numbers are divisible by 3, except one. Which is the odd one out?
102 111 117 126 132 139 144 153 162 168 174 180
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 highest multiple of 9 on this list?
The Factors Challenge
Which FIVE of the following numbers are factors of 260?
2 3 4 5 6 7 8 9 10 11 12 13 14
The Mathematically Possible Challenge
Based on our best-selling arithmetic board game.
Using 5, 8 and 11 once each, with + – × ÷ available, which is the ONLY number it is possible to make from the list below?
80 81 82 83 84 85 86 87 88 89
#NumbersIn80s
The Target Challenge
Can you arrive at 260 by inserting 1, 2, 3, 4 and 5 into the gaps on each line?
- (◯³–◯)×◯×◯÷◯ = 260
- (◯+◯)²×(◯+◯)+◯³ = 260
Answers can be found here.
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