DAY 276:

The Main Challenge

Using the numbers 2, 3 and 6 once each, with – × ÷ available, list the 14 target numbers from 1-30 it is mathematically possible to achieve.

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 & 5th rows contain the following fourteen numbers:

6   7   13   16   21   25   36   42   45   50   66   80   81   84

There are four square numbers present. What is the sum of their square roots?

The Factors Challenge

Which is the only number listed that is not a factor of 276?

2      3      4      6      9      12

The Mathematically Possible Challenge

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

4    8    12    16    20    24    28    32    36    40

#4TimesTable

The Target Challenge

Can you arrive at 276 by inserting 1, 2, 3, 4 and 5 into the gaps below?

  •  (◯²–◯)×◯×◯×◯ = 276

 

Answers can be found here.

Click Paul Godding for details of online maths tuition.

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