The Main Challenge
… is a typical challenge from the excellent American maths card game, 24game®.
Using the four numbers 2, 4, 4 and 9 once each, with + – × ÷ available, can you arrive at the target number of 24?
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 two numbers, when 16 is added to them, each become a square number?
The Factors Challenge
Which of the following numbers are factors of 265?
3 5 7 9 11 13 15
The Mathematically Possible Challenge
Using 3, 7 and 9 once each, with + – × ÷ available, which THREE numbers are NOT possible to make from the list below?
6 12 18 24 30 36 42 48 54 60
#6TimesTable
The Target Challenge
Can you arrive at 265 by inserting 2, 4, 7, 8 and 10 into the gaps below?
- (◯²+◯–◯)×(◯÷◯) = 265
Answers can be found here.
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