DAY 257:

The Main Challenge

When using the numbers 2, 5 and 7 once each, with + – × ÷ available, can you list the TWELVE target numbers from 1-30 that are mathematically possible to achieve?

Full details of our popular arithmetic and strategy board game can be found by clicking Mathematically Possible.

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 3rd & 7th rows contain the following fourteen numbers:

4   11   13   24   25   27   30   36   42   45   66   70   77   80

Which three different numbers have a sum of 77?

The Factors Challenge

Which of the following numbers are factors of 257?

3     5     7     9     11     13     None of them

The Mathematically Possible Challenge

Based on our best-selling arithmetic board game.

Using 58 and 11 once each, with + – × ÷ available, which are the only TWO numbers it is possible to make from the list below?

2    3    5    7    11    13    17    19    23    29

#PrimeNumbers

The Target Challenge

Can you arrive at 257 by inserting 2, 4, 5, 8 and 9 into the gaps below?

  •  ◯²×◯+×(7+◯+◯) = 257

Answers can be found here.

Click Paul Godding for details of online maths tuition.

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