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Multiple choice

Find the missing number in the following number series- (420 \quad 105 \quad ? \quad 52.5 \quad 105 \quad 420)

  1. 26.25

  2. 52.5

  3. 42

  4. 84

  5. 64

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Working backwards: 105 × 4 = 420. So the pattern is ×4, ÷2, ×4, ÷2, ×4. 52.5 × 2 = 105, and 105 ÷ 2 = 52.5. So missing number is 52.5.

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