Question

Consider a collection of enveloped consisting of 2 red, 1 blue, 2 green envelopes, and 2 yellow envelopes. If two envelopes are selected at random, with replacement, determine the probability that at least one envelope is a yellow envelope.

Can I get a detailed answer so that I can use it to study?

Answer 1

The probability of picking a yellow envelope is 2/7

Explanation:

red envelope =2

blue " " =1

green " "=2

yellow " " =2

Total envelope =2+1+2+2=7

Probability thay at least one envelope will be yellow

P=number of yellow envelope/Total envelope

P=2/7