Today’s Challenge
What is the total of all the square numbers from 1-100 inclusive?
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 6th & 7th rows of the playing board contain the following fourteen numbers:
4 5 11 12 18 20 24 27 30 33 49 56 70 77
List FIVE sets of three different numbers that all have a sum of 100.
Make 91 Challenge
Can you arrive at 91 by inserting 2, 4, 5 and 9 into the gaps on each line?
- (◯+◯)×(◯+◯) = 91
- ◯³+◯×(◯–◯) = 91
- ◯²×◯×√◯–◯ = 91
Answers can be found here.
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