EduNinja

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

Edexcel IGCSE Math A Foundation 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 5(b)

[Maximum number: 2]

Here are the first five terms of a number sequence.

36122448\begin{array}{lllll} 3 & 6 & 12 & 24 & 48 \end{array}

Find the 19th term of the sequence.

Kaz says that 7962622 is a term of this sequence.
Kaz is wrong.