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Edexcel IGCSE Math A Higher 3.1.A sequence terms from rules

Edexcel IGCSE Math A Higher 3.1.A sequence terms from rules
Edexcel IGCSE Math A syllabusMath A 4MA1First assessment 2018

Practise sequence-term questions by applying the given rule or pattern position carefully, then checking whether a proposed term can appear.

How this is tested

  • Use an nth-term expression such as 5n+17 to calculate a specified term.
  • Draw or continue visual patterns by applying the term-to-term rule accurately.
  • Test whether a proposed large number can be a term by linking it to the rule.

Question 3(b)

[Maximum number: 2]

Here are the first five terms of a number sequence S.

1016222834\begin{array}{lllll} 10 & 16 & 22 & 28 & 34 \end{array}

The nth term of a sequence T is given by n2−3n^2-3.
There are numbers that are terms in both the sequence S and the sequence T.

Find one of these numbers.