Question 404888
1)
Probability that a person selected was born on Tuesday P(A)= 1/7

probability that not born on Tuesday P'(A) = 1- P(A) = 6/7



2)
Probability that among 2 people,

 first born on Tuesday and second on other day = 1/7* 6/7 = 6/49

 first born on other day and second on Tuesday = 6/7 * 1/7 = 6/49


probability that exactly one was born on a Tuesday = 6/49 + 6/49 = 12/49