The Main Challenge
. . . is a Mathelona number puzzle where you must solve all four lines arithmetically by filling the 16 gaps below with digits 0-9.
Each digit 0-9 can only be inserted a maximum of TWICE in the whole puzzle:
◯ + ◯ = 5 = ◯ + ◯
◯ + ◯ = 3 = ◯ – ◯
◯ + ◯ = 10 = ◯ × ◯
◯ + ◯ = 1 = ◯ ÷ ◯
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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 5th & 7th columns contain the following fourteen numbers:
5 8 9 11 14 18 24 25 28 32 44 50 66 84
Which THREE numbers above 11 each become a multiple of 7 when 11 is subtracted from them?
The Factors Challenge
Which is the ONLY number below that is a factor of 329?
3 5 7 9 11 13 15 17
The Mathematically Possible Challenge
Using 5, 6 and 12 once each, with + – × ÷ available, which is the ONLY number it is possible to make from the list below?
1 4 9 16 25 36 49 64 81 100
#SquareNumbers
The Target Challenge
Can you arrive at 329 by inserting 1, 4, 9, 16 and 25 into the gaps below?
- ◯×◯×(◯+√◯)+◯ = 329
Answers can be found here.
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