Multiple choice

Directions: Fill the blank with correct alternative.

121, 225, 361, (…..)

  1. 441

  2. 484

  3. 529

  4. 729

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

The numbers are 112, 152, 192, …., i.e. 112, (11 + 4 x 1)2, (11 + 4 x 2)2 ,…. So, missing number = (11 + 4 x 3)2 = (23)2 = 529.