Multiple choice

In the following number series only one number is missing. Find out the missing number. 10, 15, 15, 12.5, 9.375, 6.5625, ?

  1. 4.375

  2. 3.2375

  3. 4.6275

  4. 3.575

  5. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The pattern uses multiplying fractions: 10 × 1.5 = 15, 15 × 1 = 15, 15 × 0.833... = 12.5, 12.5 × 0.75 = 9.375, 9.375 × 0.7 = 6.5625. The multipliers are 3/2, 2/2, 5/6, 3/4, 7/10. Next multiplier follows the decreasing pattern or is 2/3. 6.5625 × 2/3 = 4.375. This matches option A.

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