DAY 78:

Today’s Challenge

Using the three numbers 5, 5 and 5 once each, with + – × ÷ available, which are the only seven target numbers from 1-30 that are mathematically possible to achieve?

The 7puzzle Challenge

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

The 4th & 7th rows contain the following fourteen numbers:

3   4   10   11   24   27   30   32   35   44   54   60   70   77

Which four different numbers have a sum of 100?

Make 78 Challenge

Can you arrive at 78 by inserting 2, 4, 5 and 8 into the gaps on each line?

  •  ◯×◯×◯–√◯ = 78
  •  (◯+◯)×(◯+◯) = 78
  •  (◯²–◯)×◯+ = 78

Answers can be found here.

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