Today’s Challenge
Replace all 12 ◯’s in this addition-only MATHELONA puzzle with the following 12 numbers so that all four lines work out:
1 1 2 3 4 4 5 5 6 8 9 10
◯ + ◯ = ◯
◯ + ◯ = ◯
◯ + ◯ = ◯
◯ + ◯ = ◯
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 rows of the playing board contain the following fourteen numbers:
4 6 7 11 16 21 24 27 30 50 70 77 81 84
From the list, what is the sum of the even numbers?
Make 34 Challenge
Can you arrive at 34 by inserting 2, 3, 5 and 8 into the gaps on each line?
- ◯×◯+◯×◯ = 34
- ◯×◯–◯×◯ = 34
- (◯–◯)²×◯+◯ = 34
Answers can be found here.
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