Multiple choice

Directions: Choose the correct alternative that will complete the following series. 5, ?, 23, 47, 95, 191

  1. 13

  2. 10

  3. 17

  4. 11
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The pattern is x * 2 + 1. 5 * 2 + 1 = 11. 11 * 2 + 1 = 23. 23 * 2 + 1 = 47. 47 * 2 + 1 = 95. 95 * 2 + 1 = 191.

AI explanation

Each number in the series is multiplied by 2 and then decreased by 1 to obtain the next number. Multiplying 5 by 2 gives 10, and subtracting 1 gives 9, but since that is not an option, we test the result 11 by multiplying it by 2 to get 22, then subtracting 1 to get 21, which is not the next term. Re-evaluating the multiplication and addition pattern, multiplying 11 by 2 and adding 1 gives 23, and multiplying 23 by 2 and adding 1 gives 47. Following this consistent rule, the result is 11.

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