Multiple choice

Directions: Choose the correct number from the given options and fill in the next number in the series given below.

99, 63, 35, 15, ___

  1. 7

  2. 3

  3. 5

  4. 1
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The numbers are written as 102 - 1, 82 - 1, 62 - 1, 42 - 1, 2² - 1, and so on. 

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