What is the estimated sum of 21 5/6 + 8 1/4? (⬅These are mixed number fraction.) A) 28

B) 29

C) 30

D) 31

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)?