Multiple choice

What will come in place of question mark?

1, 3, 11, 47, ?

  1. 239

  2. 235

  3. 99

  4. 143

  5. 191

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Here, every term is obtained by following the operations of * 2 + 1, * 3 + 2, * 4 + 3 and so on with preceding terms.

1 * 2 + 1 = 3 3 * 3 + 2 = 11 11 * 4 + 3 = 47 Similarly, 47 * 5 + 4 = 239