Class 6 · Olympiad Prep

Find the next number: 9, 13, 17, 21, 25, ?

  • A.33
  • B.37
  • C.29 ✓
  • D.25
Explanation: Each term increases by 4, so the next term is 25 + 4 = 29.

Class 6 IMO Mathematics Olympiad practice · Patterns & Sequences · Number & Letter Sequences

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