Multiple choice

Find the missing term in the following number series. 20 10 30 7.5 37.5 ?

  1. 62.5

  2. 15

  3. 18.25

  4. 20.5

  5. 6.25
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

The pattern alternates between ÷2 and ×3: 20 ÷ 2 = 10, 10 × 3 = 30, 30 ÷ 4 = 7.5, 7.5 × 5 = 37.5. Following the pattern: 37.5 ÷ 6 = 6.25. The divisors/multipliers increase by 1 each step (2, 3, 4, 5, 6).

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