Multiple choice

In the following two questions, a series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series. 3, 5, 9, 17, ?

  1. 42

  2. 26

  3. 65

  4. 33

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

The pattern is: 3*2-1=5, 5*2-1=9, 9*2-1=17, 17*2-1=33.

AI explanation

The pattern multiplies the position number of each term by 2 and then adds 1. The first term is 1 times 2 plus 1 to equal 3, the second term is 2 times 2 plus 1 to equal 5, and the third term is 3 times 2 plus 1 to equal 9. Continuing this formula, the fifth term is 5 times 2 plus 1, which equals 33.

Keep practicing — related questions