Look at the numbers on a normal clock face, 1 to 12, find the following number:
- it is half of one of the numbers on the clock face,
- it is also two-thirds of another number on the clock face,
- . . . and three-quarters of another!
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 1st & 2nd rows of the playing board contain the following fourteen numbers:
2 8 9 14 15 17 22 28 40 48 55 63 64 72
What is the total when adding together the prime numbers and square numbers?
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