CAIE IGCSE Mathematics Extended Nth Term of Sequences

CAIE IGCSE Mathematics Extended Nth Term of Sequences
Cambridge IGCSE Mathematics 0580 syllabus for exams in 2028, 2029 and 20302028–2030

Review CAIE IGCSE Mathematics nth-term sequences through geometric patterns, powers, starting-term adjustments and exponent shifts.

How this is tested

  • write geometric nth terms using powers such as 3^(n-1) or 24(1/2)^(n-1)
  • adjust the starting term and exponent shift when a sequence begins at n=1 or n=2

Question 20(b)

[Maximum number: 2]

These are the first five terms of a sequence.
48
24
12
6
3

Find the nth term.