Question

You are given three coins: one has heads on both faces, the second has tails on both faces, and the third has a head on one face and tail on the other. You choose a coin at random and toss it, and it comes up heads. The probability that the other face is tails is

• A.
  1/4
• B.
  1/3
• C.
  1/2
• D.
  2/3

Answer 1

The correct option is B

1/3
As one of the face is already shown as head so the possibility of second coin is not there (because second coin has both tail). Now sample space will contain now events (H, H, T). So the probability for another face as tail will be 1/3.