Last updated at May 29, 2018 by Teachoo

Transcript

Example 9 Harpreet tosses two different coins simultaneously (say, one is of Re 1 and other of Rs 2). What is the probability that she gets at least one head? Total possible outcomes = (H, H) , (H, T), (T, H), (T, T) Number of possible outcomes = 4 Total outcomes where she get atleast one head = (H, H) , (H, T), (T, H) Number of outcomes where she get atleast one head = 3 P(she gets atleast one head) = (๐๐ข๐๐๐๐ ๐๐ ๐๐ข๐ก๐๐๐๐๐ ๐คโ๐๐๐ ๐ โ๐ ๐๐๐ก๐ ๐๐ก๐๐๐๐ ๐ก ๐๐๐ โ๐๐๐)/(๐๐ข๐๐๐๐ ๐๐ ๐๐๐ ๐ ๐๐๐๐ ๐๐ข๐ก๐๐๐๐๐ ) = 3/4

About the Author

Davneet Singh

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.