A group of children is trying to share a pile of stickers. If every child gets 2 stickers, there will be 7 stickers left over. If 2 children do not get any stickers, then each of the remaining students will get exactly 3 stickers. How many children are in the group?

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)?