Ex 14.1, 7 It is given that in a group of 3 students, the probability of 2 students not having the same birthday is 0.992. What is the probability that the 2 students have the same birthday? Probability that two students are not having same birthday = 0.992 Probability that two students are not having same birthday = 1 – Probability that two students are having same birthday P(not same birthday) = 1 – P(same birthday) 0.992 = 1 – P(same birthday) P(same birthday) = 1 – 0.992 P(same birthday) = 0.008 So, probability that 2 students will have the same birthday is 0.008

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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.

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