Multiple choice

Directions: Find the missing number in the following series. 24, 49, 99, 199, 399 ___

  1. 499

  2. 699

  3. 899

  4. 799
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D Correct answer
Explanation

The pattern is (previous number * 2) + 1. Specifically: 24*2+1=49, 49*2+1=99, 99*2+1=199, 199*2+1=399. Thus, 399*2+1 = 799.

AI explanation

Each number in the series is multiplied by 2, and then 1 is added to arrive at the next term. Multiplying 24 by 2 and adding 1 gives 49, and multiplying 49 by 2 and adding 1 gives 99. Multiplying 399 by 2 and adding 1 provides the final result of 799.

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