CAT Exam  >  CAT Questions  >  A box contains five yellow and five green bal... Start Learning for Free
A box contains five yellow and five green balls. A ball is picked from the box and is replaced by a ball of the other colour. For instance, if a green ball is picked then it is replaced by a yellow ball and vice-versa. The process is repeated ten times and then a ball is picked from the box. What is the probability that this ball is yellow?
(2011)
  • a)
  • b)
  • c)
  • d)
    None of these
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
A box contains five yellow and five green balls. A ball is picked from...
The number of yellow balls initially in the box is the same as the number of green -balls.

  • None of the ten operations involved after this favour any particular colour between the two.

  • So the probability of the final ball picked being yellow (p(Y)) must be the same as that of being green (p(G)).

  • Thus, p(Y) = p(G) and the ball picked should be either yellow or green, which means that p(Y) + p(G) = 1.

Hence, p(Y) = p(G) = 1/2

Go through the link below and clear all the concepts of probability that are asked in CAT. 

View all questions of this test
Explore Courses for CAT exam

Top Courses for CAT

Question Description
A box contains five yellow and five green balls. A ball is picked from the box and is replaced by a ball of the other colour. Forinstance, if a green ball is picked then it is replaced by a yellow ball and vice-versa. The process is repeated ten times and thena ball is picked from the box. What is the probability that this ball is yellow?(2011)a)b)c)d)None of theseCorrect answer is option 'D'. Can you explain this answer? for CAT 2025 is part of CAT preparation. The Question and answers have been prepared according to the CAT exam syllabus. Information about A box contains five yellow and five green balls. A ball is picked from the box and is replaced by a ball of the other colour. Forinstance, if a green ball is picked then it is replaced by a yellow ball and vice-versa. The process is repeated ten times and thena ball is picked from the box. What is the probability that this ball is yellow?(2011)a)b)c)d)None of theseCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for CAT 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A box contains five yellow and five green balls. A ball is picked from the box and is replaced by a ball of the other colour. Forinstance, if a green ball is picked then it is replaced by a yellow ball and vice-versa. The process is repeated ten times and thena ball is picked from the box. What is the probability that this ball is yellow?(2011)a)b)c)d)None of theseCorrect answer is option 'D'. Can you explain this answer?.
Solutions for A box contains five yellow and five green balls. A ball is picked from the box and is replaced by a ball of the other colour. Forinstance, if a green ball is picked then it is replaced by a yellow ball and vice-versa. The process is repeated ten times and thena ball is picked from the box. What is the probability that this ball is yellow?(2011)a)b)c)d)None of theseCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for CAT. Download more important topics, notes, lectures and mock test series for CAT Exam by signing up for free.
Here you can find the meaning of A box contains five yellow and five green balls. A ball is picked from the box and is replaced by a ball of the other colour. Forinstance, if a green ball is picked then it is replaced by a yellow ball and vice-versa. The process is repeated ten times and thena ball is picked from the box. What is the probability that this ball is yellow?(2011)a)b)c)d)None of theseCorrect answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of A box contains five yellow and five green balls. A ball is picked from the box and is replaced by a ball of the other colour. Forinstance, if a green ball is picked then it is replaced by a yellow ball and vice-versa. The process is repeated ten times and thena ball is picked from the box. What is the probability that this ball is yellow?(2011)a)b)c)d)None of theseCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for A box contains five yellow and five green balls. A ball is picked from the box and is replaced by a ball of the other colour. Forinstance, if a green ball is picked then it is replaced by a yellow ball and vice-versa. The process is repeated ten times and thena ball is picked from the box. What is the probability that this ball is yellow?(2011)a)b)c)d)None of theseCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of A box contains five yellow and five green balls. A ball is picked from the box and is replaced by a ball of the other colour. Forinstance, if a green ball is picked then it is replaced by a yellow ball and vice-versa. The process is repeated ten times and thena ball is picked from the box. What is the probability that this ball is yellow?(2011)a)b)c)d)None of theseCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice A box contains five yellow and five green balls. A ball is picked from the box and is replaced by a ball of the other colour. Forinstance, if a green ball is picked then it is replaced by a yellow ball and vice-versa. The process is repeated ten times and thena ball is picked from the box. What is the probability that this ball is yellow?(2011)a)b)c)d)None of theseCorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice CAT tests.
Explore Courses for CAT exam

Top Courses for CAT

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev