Please show steps and formula to solve.

2. Mary Peterson works at a local bank. She finds that forty percent of all loan request received from females. Ten loan requests will be received tomorrow. a. What is the probability that exactly 5 of the requests will be from female clients? b. What is the probability that no requests will be from female clients? c. What is the expected number of requests from women? d. What is the variance of the number of requests from women