2023 AISS EM S1 EOY P1 Q4
2023 AISS EM S1 EOY P1 Q4
3 marks
The figures in the sequence below are formed using sticks.
The table below shows the number of sticks in each figure:
| Figure Number | \({1}\) | \({2}\) | \({3}\) | \({4}\) |
|---|---|---|---|---|
| Number of sticks | \({6}\) | \({11}\) | \({16}\) | \({x}\) |
- Find the value of \({x}\).[1]
- Write down an expression, in terms of \({n}\), for the number of sticks used to form Figure \({n}\).[1]
- Figure \({y}\) has \({86}\) sticks. Find the value of \({y}\).[1]
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Answer:(a) \(x=21\) (b) \(5n+1\) (c) \(y=17\)
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