1. A number is chosen at random from the whole numbers between 1 and 100, inclusive.
(a) What is the probability that the number ends in a zero?
(b) What is the probability that the number is odd?
(c) What is the probability that the number is odd or ends in a zero?
2. An urn contains five red balls and six white balls. A sample of two balls is selected at random from the urn. Find the probability that
(a) Only red balls are selected.
(b) At least one white ball is selected?