The following contingency table summarizes the number of students at a college who have a Mastercard or a Visa credit card. (show all the calculations)

Have Visa Don't have Visa Total

Have MasterCard 1,000 1,500 2,500

Don't have MasterCard 3,000 4,500 7,500

Total 4,000 6,000 10,000

Find the probability that a randomly selected student:

(1)Has a Mastercard

(2)Has a VISA

(3)Has both credit cards.

Find the probability that a randomly selected student:

(1)Has a Mastercard or VISA

(2)Has neither credit card

(3)Has exactly one of the two credit cards.