A box contains blue, red and white marbles. Write an algebraic expression for:
a. The probability of a blue marble.
b. The probability of a blue or white marble.
c. the Probability for a not blue marble.
total amount of marbles = b + r + w
a. P(B) = $$\frac{b}{b+r+w}$$
b. P(B or W) = $$\frac{b+w}{b+r+w}$$
c. P(not B) = $$\frac{r+w}{b+r+w}$$