51% of all violent felons in the prison system are repeat offenders. If 48 violent felons are randomly selected, find the following probabilities. Round answers to 4 places where possible. (a) Exactly 24 of them are repeat offenders. (b) At most 23 of them are repeat offenders. (c) At least 24 of them are repeat offenders. (d) Between 20 and 24 (including 20 and 24) of them are repeat offenders