DAY 266:

The Main Challenge

Using the four numbers 2, 4, 7 and 8 once each, with + – × ÷ available, show how you can make the following six target numbers:

8     18     28     38     48     58

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 & 6th rows contain the following fourteen numbers:

3   5   10   12   18   20   32   33   35   44   49   54   56   60

From the list, which three different numbers have a sum of 77?

The Factors Challenge

Which FOUR numbers in the range 2 to 20 inclusive are factors of 266?

The Mathematically Possible Challenge

Based on our best-selling arithmetic board game.

Using 37 and once each, with + – × ÷ available, which are the only TWO numbers it is possible to make from the list below?

7    14    21    28    35    42    49    56    63    70

#7TimesTable

The Target Challenge

Can you arrive at 266 by inserting 1, 2, 3, 4 and 7 into the gaps below?

  •  (◯²+◯)×(◯+◯)²–² = 266

Answers can be found here.

Click Paul Godding for details of online maths tuition.

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