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Question

Generalise the given pattern using match sticks as an algebraic expression, by finding the number of match sticks required to make the nth term.


A
6n
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B
3n - 3
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C
3n + 3
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D
2n + 3
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Solution

The correct option is C 3n + 3
By comparing each term and the number of match sticks used, we can see a pattern. By generalising the pattern we will get,


So, when n=1
3n + 3 = 3 x 1 + 3 = 6
When n = 2,
3n + 3 = 3 x 2 + 3 = 9.....

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