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2 marksNumber Sequences and Rules

CSEC Mathematics · May/June 2011 · Paper 2 · Question 8(a)

Sequence of diagrams made of sticks and thumb tacks. t = thumb tacks, s = sticks.

Draw the FOURTH diagram in the sequence.

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Other parts of this question

  1. 8(b)(i)How many sticks are in the SIXTH diagram?[1 mark]
  2. 8(b)(ii)How many thumb tacks are in the SEVENTH diagram?[1 mark]
  3. 8(c)(i)Complete the table by inserting the missing values at the rows marked (i) and (ii). (i) s=52, find t.[2 marks]
  4. 8(c)(ii)Complete the table by inserting the missing values at the rows marked (i) and (ii). (ii) t=55, find s.[2 marks]
  5. 8(d)Write the rule, in terms of s and t, to show how t is related to s.[2 marks]

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