Monday, 28 September 2015

Mission IBPS Exam : Quant Quiz on Probability

1.In a bag, there are 3 red balls’ 5 green balls and 7 blue balls. One ball is picked up randomly. What is the probability that it is neither red nor blue?
(e)None of these

2.A bag has 12 balls of which 4 are green balls. Three balls are drawn at random from the bag, one after the other. The probability that all three are not-green balls is
(d)(1⁄3 )^3
(e)None of these
3.In a class of 40 students with roll no. 3 to 42. A students is picked up to tell a joke. Find the probability that the roll number of the selected student is either a multiple of 4 or 7?
(e)None of these

4.The probability that a student will get a laptop is 2/3 and that of getting a tab is 5/9. If the probability of getting at least one application is 4/5 . What is the probability that he will get both is
(e)None of these

5..A box contains 5 brown and 4 white socks. A man takes out two socks. The probability that they are of the same color is
(e)None of these

6.A company CEO wants to visit four plants P, Q, R and S on an official trip. The probability that he visits Q just before R is
(e)None of these

7.There are 10 persons, including A and B. who stand in the form of a circle. If the arrangement of the persons is at random, them the probability that there are exactly 3 persons between A and B is
(e)None of these

8.A box contains 6 white balls and 7 black balls. Two balls are drawn at random. What is the probability that both are of same colour?
(e)None of these
9..The letters A, G, L, H, U are re arranged to form the word ‘LAUGH’. Find its probability.
(e)None of these
10.If the probability that a boy of class X speaks truth is 7/8 and that of a girl of class X is 9/10 , then what is the probability that both will speak truth from class X?
(e)None of these

Answers with Explanation !!!!!!!!!

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