Three UNIQUE digits must be used to arrive at a specified target number.
Players must multiply two numbers together, then either add or subtract the third number to achieve your target answer of 25. The formula is (a×b)±c, where a, b and c are three unique digits from 1-9.
One way of achieving 25 is (8×2)+9, can you find the other EIGHT ways?
[Note: (8×2)+9 = 25 and (2×8)+9 = 25 counts as just ONE way.]
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 3rd column of the playing board contains the following seven numbers:
4 12 15 17 35 80 81
Using these seven numbers exactly once each, with + – × ÷ available to use in your calculation, can you arrive at the target number of 100?
Make 360 Challenge
Can you arrive at 360 by inserting 3, 5, 10, 12 and 20 into the gaps below?
◯×◯×◯×◯÷◯ = 360
Answers can be found here.
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