DAY 94:

Today’s Challenge

Using the numbers 3, 5 and 5 once each, with + – × ÷ available, which four numbers from the following list are NOT mathematically possible to make?

1   2   3   4   7   10   13   15   18   20   22   25   28   30

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

What is the difference between the two prime numbers on the list?

Make 94 Challenge

Can you arrive at 94 by inserting 3, 5, 7 and 10 into the gaps on each line?

  •  ◯³–◯×◯–◯ = 94
  •  ◯²–◯×(◯) = 94
  •  ◯²+◯×(◯+◯) = 94   (2 different ways!)

Answers can be found here.

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