A&M sweets are of varying colors and the different colors occur in different proportions. The table below gives the probability that a randomly chosen A&M has each color, but the value for tan candies is missing.

Color

Brown

Red

Yellow

Green

Orange

Tan

Probability

0.3

0.2

0.2

0.1

0.1

?

(a)What value must the missing probability be?

(b)You draw an A&M at random from a packet. What is the probability of each of the following events?

i.You get a brown one or a red one.

ii.You don't get a yellow one.

iii.You don't get either an orange one or a tan one.

iv.You get one that is brown or red or yellow or green or orange or tan.