1 Zac Richardson CPA has a stack of 22 tax returns to comple

1. Zac Richardson, CPA, has a stack of 22 tax returns to complete before the April 15th deadline. Of the 22 tax returns, 13 are from individuals, 7 are from businesses, and 2 are from charitable organizations. He randomly selects two returns. a. What is the probability that both are businesses? b. What is the probability that at least one is a business?