Nancy has to mark and on the number line. How many spaces does she need between the integers 1 and 2 and between -1 and -2 so she can mark and ?

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)?