DAY 363:

The Main Challenge

Your task is to make the target number of 15 by adding together five numbers. You are limited to using 1 to 5, but these can be used any number of times in each calculation.

One such way of making 15 is 3+3+3+3+3.  How many other ways can you find?

The 7puzzle Challenge

The playing board of the 7puzzle game is a 7-by-7 grid containing 49 different numbers, ranging from 2 up to 84.

The 6th column contains the following seven numbers:

7     30     36     40     49     54     64

Using these seven numbers exactly once each, with + – × ÷ available to use in your calculation, can you arrive at the target number of 100?

The Factors Challenge

Which TWO numbers below are factors of 363?

3    5    7    9    11    13    15    17    19

The Mathematically Possible Challenge

Using 48 and 12 once each, with + – × ÷ available, which FOUR numbers is it possible to make from the list below?

1    4    9    16    25    36    49    64    81    100

#SquareNumbers

The Target Challenge

Can you arrive at 363 by inserting 1, 2, 3, 4 and 5 into the gaps below?

  •  (◯×◯–◯)²×(◯–◯) = 363

Answers can be found here.

Click Paul Godding for details of online maths tuition.

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