WBCS.LIVE practice question

\sqrt{20 + \sqrt{20 + \sqrt{20}}}\ldotp \ldotp \ldotp \ldotp = \wn

Solve this multiple-choice question and check the correct answer with its explanation below.

Answer options

  1. 2
  2. 3
  3. - 4
  4. 5

Correct answer and explanation

Correct answer: 5

Explanation: āœ… Correct Answer: D) 5 šŸ“š Explanation: For an infinite square root series of the form sqrt(x + sqrt(x + ...)), the answer is the larger factor of x when it is broken into two consecutive integers. The number 20 can be factored into the consecutive integers 4 and 5. Since the series uses addition, we choose the larger value, which is 5.