WBCS.LIVE practice question

An urn contains 10 black and 5 white balls. Two balls are drawn from the urn one after the other without replacement. What is the probability that both drawn balls are black?

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

Answer options

  1. 27
  2. 37
  3. 47
  4. 57

Correct answer and explanation

Correct answer: 37