Which equation is not true? A-(9 + 11) + 1 = -1
B 24 - (-6) - 6 = 24
C 12 + (-8) - 1 = 3
D-12 - 7+ 5 = 0

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)?