Dear Students,

Quantitative Aptitude Questions for IBPS RRB PO and Clerk Exam 2017

Today we have included the Probability questions. You should try to do it within 16-17 Minutes. If you fail to complete it in stipulated time, then try again with full force. These Probability questions are very important from exam point of view like IBPS RRB Exam, IBPS PO and IBPS Clerk.

Direction (1-3) - There is three bags A, B and C. In each bag there are three types of colored balls Yellow, Green and Black.

In bag A, no. of yellow colored balls are y and no. of green colored balls are g. Number of green colored balls are 4 more than the number of yellow colored balls. When one ball is picked at random then the probability of getting black color ball is 5/13. The value of y is 18 2/11% less then g.

In bag B, number of yellow colored balls is 200/9% more than that of bag A. If two balls are picked at random from bag B then the probability of getting both green color ball is 4/37. Total number of balls in bag B is 75.

In bag C, the ratio of number of green colored balls and number of black colored balls is 7 : 5. Total number of green and black colored balls is 36. If one ball is picked at random then the probability of getting one yellow ball is 7/13.

Q1. If x number of yellow balls from bag B are taken and placed into bag A and 20% of black balls from bag A are taken and placed into in bag B. If we pick one ball from bag B then the probability that the ball is of black color is 11/26. Then find the value of x?
(a) 5
(b) 6
(c) 3
(d) 2
(e) None of these

Q2. If one ball picked at random from each of the bag A and bag B then find the probability that both of the balls are of the same color?
(a) 21×47/65×75
(b) 22×43/65×75
(c) 11×17/65×75
(d) Can’t be determined
(e) None of these

Q3. Difference between the number of green balls in bag A and bag C is how much percent more/less than the sum of the number of black balls in bag A and bag C together?
(a) 100%
(b) 95%
(c) 97.5%
(d) 102.5%
(e) None of these

Directions (4 – 6): A bag contains 6 red balls and 8 green balls. Two balls are drawn at random one after one with replacement. What is the probability that-

Q4. Both the balls are green
(a) 13/49
(b) 15/49
(c) 16/49
(d) 17/49
(e) None of these
Q5. First one is green and second one is red
(a) 16/49
(b) 14/49
(c) 11/49
(d) 12/49
(e) None of these
Q6. Both the balls are red
(a) 14/49
(b) 9/49
(c) 11/49
(d) 12/49
(e) None of these
Q7. From a pack of 52 cards, 2 cards are drawn at random. What is the probability that either both cards are black card or both are heart card?
(a) 31/102
(b) 21/73
(c) 1/5
(d) 17/100
(e) 3/10
Q8. Two cards are drawn at random from a pack of 52 cards. What is the probability that either both are black or both are jacks?
(a) 62/221
(b) 21/312
(c) 5/21
(d) 55/221
(e) None of these
Q9. From a group of 3 men, 4 women and 2 children, 4 people are to be chosen to form a committee. What is the probability that the committee contains at least 1 each of men, women and children?
(a) 4/15
(b) 12/21
(c) 4/19
(d) 11/31
(e) None of these

Q10. A box contains 25 bulbs out of which 5 are defective. 3 bulbs are to be delivered to a customer. What is the probability that he get one defective bulb?
(a) 19/46
(b) 25/51
(c) 44/77
(d) 21/46
(e) None of these
Q11. There are 4 red balls, 5 white and 3 green balls in a basket. 3 balls are chosen at random. What is the probability that there is at most 1 green ball?
(a) 13/40
(b) 48/55
(c) 25/68
(d) 8/33
(e) 9/19

Q12. A bag contains 3 red, 4 green and 3 yellow balls. If 2 balls are drawn at random, what is the probability that they are of different color?
(a) 9/16
(b) 4/15
(c) 11/15
(d) 5/11
(e) None of these

Q13. There are 4 black balls and 6 white balls. 2 balls are drawn one by one without replacement. What is the probability that the balls are same in color?
(a) 9/21
(b) 8/17
(c) 5/14
(d) 7/15
(e) 9/19

Q14. A bag contains 5 red balls and 4 green balls. 2 balls are drawn at random. What is the probability that both balls are same in color?
(a) 5/11
(b) 4/9
(c) 3/13
(d) 6/17
(e) None of these

Q15. A urn contains 4 red balls, 5 green balls and 6 white balls, if one ball is drawn at random, find the probability that it is neither red nor white.
(a) 1/3
(b) 1/4
(c) 1/5
(d) 2/3
(e) None of these