What is the number of matchsticks you need to make ' $n$ ' number of $8$ s if 7 matchsticks are used to make one 8?
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Solution

A 8 made using matchstick as shown below.

(1 mark)
It is clear that we would always require 7 matchsticks to make one 8.
So, to make 'n' 8's we will require ' 7n' matchsticks.
(1 mark)

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