Question: A bag contains 4 blue, 6 green, and 5 red marbles. If one marble is drawn at random, what is the probability that it is not blue?
(A) 5⁄15
(B) 11⁄15
(C) 1⁄3
(D) 4⁄15
Solution:
Total marbles = 4 (blue) + 6 (green) + 5 (red) = 15.
Number of non-blue marbles = 6 (green) + 5 (red) = 11.
Thus, the probability of drawing a marble that is not blue:
P (not blue) = 11⁄15
Practice makes perfect. We recommend you to practice topic-wise tests https://rankmadeeasy.com/courses-and-test-series . Our expert team has prepared these tests to help you become confident in each topic.
Our Social Media Presence –
https://youtube.com/@rankmadeeasy
https://www.facebook.com/groups/rankmadeeasy
https://www.facebook.com/RankMadeEasy
https://www.instagram.com/rankmadeeasy1
https://twitter.com/rankmadeeasy