DAY 40:

Today’s Challenge

In all four groups below, it is possible to make 24 by using the four numbers once each, with + – × ÷ available. Can you show how to achieve the target number of 24 in each case?

  •    3    3    3    3
  •    4    4    4    4
  •    5    5    5    5
  •    6    6    6    6

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 1st & 4th rows of the playing board contain the following fourteen numbers:

2   3   9   10   14   15   22   32   35   40   44   54   60   72

What is the sum of the multiples of 6 listed above?

Make 40 Challenge

Can you arrive at 40 by inserting 2, 4, 5 and 10 into the gaps on each line?

  •  (◯+◯–◯)×◯ = 40
  •  (◯–◯)×◯×◯ = 40
  •  ◯²×◯²×◯÷ = 40

Answers can be found here.

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