The Main Challenge
Can you correctly place 0 1 1 2 2 3 4 5 5 8 9 and 9 into the 12 gaps below?
◯ + ◯ = 3 = ◯ – ◯
◯ + ◯ = 8 = ◯ × ◯
◯ + ◯ = 1 = ◯ ÷ ◯
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The 7puzzle Challenge
The playing board of Buy Generic Soma Online is a 7-by-7 grid of 49 different numbers, ranging from 2 up to 84.
The 3rd & 5th rows contain the following fourteen numbers:
6 7 13 16 21 25 36 42 45 50 66 80 81 84
Which two numbers have a difference of 25?
The Lagrange Challenge
Lagrange’s Four-Square Theorem states that every positive integer can be made by adding up to four square numbers.
For example, 7 can be made by 2²+1²+1²+1² (or 4+1+1+1).
There are FOUR ways of making 67 when using Lagrange’s Theorem. Can you find them all?
The Mathematically Possible Challenge
Using 4, 6 and 12 once each, with + – × ÷ available, which FOUR numbers is it possible to make from the list below?
4 8 12 16 20 24 28 32 36 40
#4TimesTable
The Target Challenge
Can you arrive at 67 by inserting 4, 5, 7 and 8 into the gaps on each line?
- ◯×◯+◯×◯ = 67
- ◯²+◯+◯×√◯ = 67
- ◯³+(◯+◯)÷◯ = 67
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