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Edexcel IGCSE Math A 3.1.B continue integer sequences

Practise integer-sequence questions by finding the common difference or pattern, continuing the sequence and explaining term membership.

Syllabus
First assessment 2018
Course
Math A 4MA1
Level
Foundation

Exam points

  • Write the next or later term after identifying the term-to-term rule correctly.
  • Explain whether a stated number can be in the sequence using the rule or pattern.
  • Calculate a requested term such as the 12th term from the observed sequence rule.

3.1.B Subsequent terms of an integer sequence and the rule question 1

[Maximum number: 1]

Here is a sequence of patterns.

Figure for Question 3.1.B Subsequent terms of an integer sequence and the rule question 1 — Edexcel IGCSE Math A Foundation

Pattern number 1 is made from 1 white dot.
All other patterns are made from black dots and white dots.

Complete the table for the sequence of patterns.

Table for Question 3.1.B Subsequent terms of an integer sequence and the rule question 1 — Edexcel IGCSE Math A Foundation

One pattern in the sequence is made with exactly 20 black dots.

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