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HKIMO 2026 Grade 3 National Preliminary Set 03 Question 4

HKIMO · HKIMO 2026 Grade 3 National Preliminary Set 03

Question 4

Find the 8th number in the sequence: $11,13,17,23,31,\ldots$
  1. 67
  2. 53
  3. 41
  4. 60