DAY 275:

The Main Challenge

Your task is to arrive at the target answer of 7 in all four lines by inserting the numbers 0.5, 0.5, 2 and 3 once each.

Note: Lines 2 & 3 contain two different methods of arriving at 7 ]

  •  (◯×◯)+◯+◯ = 7
  •  (◯×◯)+(◯÷◯) = 7
  •  (◯÷◯)+(◯×◯) = 7
  •  (◯–◯)÷◯+◯ = 7

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

What is the sum of the multiples of 5?

The Factors Challenge

Which of the following numbers are factors of 275?

3     5     7     9     11     13     15

The Mathematically Possible Challenge

Using 27 and 10 once each, with + – × ÷ available, which FIVE numbers is it possible to make from the list below?

3    6    9    12    15    18    21    24    27    30

#3TimesTable

The Target Challenge

Can you arrive at 275 by inserting 3, 3, 5, 6 and 6 into the gaps below?

  •  ◯²×(◯×◯–◯)÷◯ = 275

Answers can be found here.

Click Paul Godding for details of online maths tuition.

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