Question

Suppose that the neighborhood soccer players are selling raffle tickets for $500 worth of groceries at a local store, and you bought a $1 ticket for yourself and one for your mother. The children eventually sold 1,000 tickets

(a) What is the probability that you will win?
(b) What is the probability that your mother will win?
(c) What is the probability that you or your mother will win?

Answer 1

Total number of tickets sold by children = 1000

You bought a $1 ticket for yourself and one for your mother.

(a)What is the probability that you will win?

As you have 1 ticket so you have 1 in 1000 chances of winning.

P( you winning ) =
`(1)/(1000)` = 0.001

(b) What is the probability that your mother will win?

As the mother also has 1 ticket, she also have a 1 in 1000 chances to win.

P( mother winning ) =
`(1)/(1000)` = 0.001

(c) What is the probability that you or your mother will win?

Now you have a total of 2 chances to win.

P( you or mother ) =
`(2)/(1000)` = 0.002