DAY 27:

Today’s Challenge

Using each of the numbers 2, 2 and 5 exactly once each, with + – × ÷ available, can you find all NINE numbers from 1-20 that are mathematically possible to make?

The 7puzzle Challenge

The playing board of the 7puzzle game is a 7-by-7 grid containing 49 different numbers, ranging from up to 84.

The 3rd & 6th rows of the playing board contain the following fourteen numbers:

5   12   13   18   20   25   33   36   42   45   49   56   66   80

How many more even numbers than odd numbers are listed?

Make 27 Challenge

Can you arrive at 27 by inserting 3, 3, 4 and 6 into the gaps on each line?

  •  (◯+◯)×◯+◯ = 27
  •  ◯²+◯◯×◯ = 27
  •  ◯×◯+√(◯×◯) = 27
  •  (◯+◯)×◯◯ = 27
  •  (◯²+◯²)×◯÷◯ = 27

Answers can be found here.

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