Slide11.JPG

Slide12.JPG

Learn in your speed, with individual attention - Teachoo Maths 1-on-1 Class


Transcript

Example 6 Savita and Hamida are friends. What is the probability that both will have different birthdays? (ignoring a leap year). P(both have different birthday) = P(both will not have same birthday) = 1 – P(both will have same birthday) = 1 – 1/365 = (365 − 1)/365 = 𝟑𝟔𝟒/𝟑𝟔𝟓 Example 6 Savita and Hamida are friends. What is the probability that both will have (ii) same birthday? (ignoring a leap year). Number of days in an year = 365 Number of days when same birthday is possible = 1 P(both have same birthday) = (𝑁𝑢𝑚𝑏𝑒𝑟 𝑜𝑓 𝑑𝑎𝑦𝑠 𝑤ℎ𝑒𝑟𝑒 𝑡ℎ𝑒𝑦 𝑐𝑎𝑛 ℎ𝑎𝑣𝑒 𝑠𝑎𝑚𝑒 𝑏𝑖𝑟𝑡ℎ𝑑𝑎𝑦 𝑖𝑛 𝑎𝑛 𝑦𝑒𝑎𝑟)/(𝑇𝑜𝑡𝑎𝑙 𝑛𝑢𝑚𝑏𝑒𝑟 𝑜𝑓 𝑑𝑎𝑦𝑠 𝑖𝑛 𝑎𝑛 𝑦𝑒𝑎𝑟) = 𝟏/𝟑𝟔𝟓

Ask a doubt
Davneet Singh's photo - Co-founder, Teachoo

Made by

Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.