Today’s Challenge
Your starting number is 18 and your task is to arrive at the same final answer. There are ten arithmetical steps from beginning to end, each one involving a whole number, but the 9th, and penultimate, step is missing! What should it be?
÷2 +3 –8 ×6 +4 –3 ÷5 ×2 ? ×2 = 18
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The 7puzzle Challenge
The playing board of the 7puzzle game is a 7-by-7 grid of 49 different numbers, ranging from 2 up to 84.
The 4th & 6th rows contain the following fourteen numbers:
3 5 10 12 18 20 32 33 35 44 49 54 56 60
What is the difference between the lowest and highest multiples of 4?
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Answers
. . . can be found when clicking this.
