DAY/DYDD/GIORNO/NAP 9:

The Main Challenge

. . . is from the excellent card game, 24game. Using the numbers 2, 4, 6 and 8 once each, and with all four operations + – × ÷ available, show how you can reach the target number of 24.

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 & 4th rows contain the following fourteen numbers:

3   10   13   25   32   35   36   42   44   45   54   60   66   80

From the list, find the THREE pairs of numbers that have a sum of 57.

The Roll3Dice Challenge

From six of the seven groups of numbers below, it is possible to make today’s target number of 9 when each number in the group is used once and + – × ÷ is available:

  •   1   2   3
  •   1   3   4
  •   2   2   5
  •   3   3   4
  •   3   5   6
  •   4   5   5
  •   4   6   6

Which is the only group that CANNOT make 9?

The Mathematically Possible Challenge

Using 45 and 10 once each, with + – × ÷ available, which is the ONLY number it is possible to make from the list below?

11    22    33    44    55    66    77    88    99    110

#11TimesTable

The Target Challenge

Can you arrive at 9 by inserting 3, 4, 5 and 6 into the gaps on each line?

  •  ◯×◯–(◯+) = 9
  •  ◯+×(–◯) = 9
  •  ◯²–◯×(÷◯)² = 9
  •  ◯+(◯+◯)÷◯ = 9

Answers can be found here.

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