chris has 552 to hire ushers for a concert if she hires as many ushers as possible at $32 each how much money does she have left over​

How do you find p(a and b) if a and b are independent events for two or more actions, such as tossing a coin twice and finding p(heads and heads)? 2. how do you find p(a or b) if a and b are independent events for one action, such as spinning a four-color spinner once and finding p(red or blue)?