You draw nine cards from a standard deck of cards. What is the probability that
a. four or more will be red,
b. exactly two or three will be red,
c. two or fewer will be red, and
d. exactly five will be red?.
a. 1 - (1/2 * 1/2 *1/2 + 1/2*1/2 + 1/2)
b. 1/2 * 1/2 * 1/2 + 1/2 * 1/2)
c. 1/2 + 1/2*1/2
d. 1/2*1/2*1/2*1/2*1/2
It should be that, I might be wrong though