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2 marksNumber Sequences and Rules

CSEC Mathematics · May/June 2014 · Paper 2 · Question 8(a)

A number sequence may be formed by counting the number of dots used to draw each of a set of geometric figures. The first three figures are shown.

Draw Figure 4, the next figure in the sequence above.

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Other parts of this question

  1. 8(b)Complete the table below by inserting the missing information at the rows numbered (i) and (ii).[4 marks]
  2. 8(c)Write an expression in f for the number (n) of dots used in drawing the fth figure.[2 marks]
  3. 8(d)Which figure in the sequence contains 145 dots?[2 marks]

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