Q. A bag contains 5 red, 3 white and 2 black balls. If a ball is picked at random, the probability that it is red is
A) 1/5
B) 1/2
C) 3/10
D) 9/10
Explanation
(b)
Required probability $= \frac{{\ ^{5}C}_{1}}{{\ ^{10}\ C}_{1}} = \frac{5}{10} = \frac{1}{2}$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.