DAY 272:

The Main Challenge

This 10-step number trail, involving the four arithmetical operations, may leave you in sixes and sevens!

Start with the number 6, then:

  • add 7
  • 6
  • multiply by 6
  • +7
  • divide by 7
  • subtract 6
  • +6
  • ÷7
  • add 6
  • 7

What is your final answer?

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 2nd & 7th rows contain the following fourteen numbers:

4   8   11   17   24   27   28   30   48   55   63   64   70   77

List the four pairs of numbers that have a difference of 13.

The Factors Challenge

Which FOUR from the following list are factors of 272?

2     4     6     8     10     12     14     16     18

The Mathematically Possible Challenge

Using 37 and once each, with + – × ÷ available, which are the only THREE 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 272 by inserting 4, 6, 6, 8 and 10 into the gaps below?

  •  (◯+◯–◯÷◯)×◯² = 272

Answers can be found here.

Click Paul Godding for details of online maths tuition.

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