Answer: P(r or br) = 0.2
Step-by-step explanation: When two events are mutually exclusive, i.e., they can happen at the same time, the probability of event A occur <u>OR</u> event B occur is given by the sum of the probability of each one.
The question asks for the probability of selecting Red, P(r), or selecting brown, P(br). So:
The probability of <u>Red</u>:
P(r) = 0.1
The probability of <u>Brown</u>:
P(br) = 0.1
The probability of <u>Red OR Brown</u>:
P(r or br) = P(r) + P(br)
P(r or br) = 0.1 + 0.1
<u>P(r or br) = 0.2</u>
The probability of choosing Red or Brown is 0.2.