DAY 253:

The Main Challenge

Using the numbers 0.1, 0.6, 3 and 7 once each, with + – × ÷ available, can you arrive at the target number of 7?

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 2nd & 6th rows of the playing board contain the following fourteen numbers:

5   8   12   17   18   20   28   33   48   49   55   56   63   64

What is the sum of the multiples of 8?

The Factors Challenge

Which of the following numbers, if any, are factors of 253?

3     5     7     9     11     None of them

Today’s Hint: A number is a multiple of 3 if its digits add up to a multiple of 3 ]

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?

7    14    21    28    35    42    49    56    63    70

#7TimesTable

The Target Challenge

Can you arrive at 253 by inserting 3, 5, 7, 9 and 11 into the gaps below?

  •  (◯–◯)²×(◯–◯)²–◯ = 253

Answers can be found here.

Click Paul Godding for details of online maths tuition.

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