Multiple choice

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

5, 9, 21, 37, 81, __

  1. 101

  2. 153

  3. 162

  4. 121
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Each term is doubled and operate -1,+ 3, - 5, + 7, - 9, and so on.

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