Question

A fair coin is flipped three times. What is the probability that the coin lands on heads exactly twice? (a) 1/8 (b) 3/8 (c) 1/2 (d) 5/8 (e) 7/8

Answer 1

1/2,because when coin is tossed total no. of sides=2 (head/tail).suppose we have taken head so probability of getting tail=1/2