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FMO 2026 - Grade 9 - National - Paper 03 Question 2

FMO · FMO 2026 - Grade 9 - National - Paper 03

Question 2

How many pairs of positive integers(A,B) satisfy A:4=9:B?
  1. 9
  2. 10
  3. 18
  4. 20
  5. 5