Question

The probability that two boys do not have the same birthday is 0.897. What is the probability that the two boys have the same birthday? 

Answer 1

P(do not have the same birthday) + P(have same birthday) = 1

0.897 + P(have same birthday) = 1

P(have same birthday) = 1 – 0.897

P(have same birthday) = 0.103