MEDIUM
CAT
IMPORTANT
Earn 100
In a class of students with roll no. to . A student is picked up to tell a joke. Find the probability that the roll number of the selected student is either a multiple of or ?
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Important Questions on Probability
MEDIUM
CAT
IMPORTANT
The probability that a student will get a laptop is and that of getting a tab is . If the probability of getting at least one application is . What is the probability that he will get both is:
MEDIUM
CAT
IMPORTANT
A box contains five brown and four white socks. A man takes out two socks. The probability that they are of the same color is:
MEDIUM
CAT
IMPORTANT
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:
MEDIUM
CAT
IMPORTANT
There are persons, including A and B. who stand in the form of a circle. If the arrangement of the persons is at random, then the probability that there are exactly three persons between A and B is:
MEDIUM
CAT
IMPORTANT
A box contains six white balls and seven black balls. Two balls are drawn at random. What is the probability that both are of same colour?
MEDIUM
CAT
IMPORTANT
The letters A, G, L, H, U are re-arranged to form the word 'LAUGH'. Find its probability:
EASY
CAT
IMPORTANT
If the probability that a boy of class X speaks truth is and that of a girl of class X is , then what is the probability that both will speak truth from class X?
EASY
CAT
IMPORTANT
In a horse race, there were horses numbered to . The organisers assigned a probability of winning the race to each horse such that the horse , would win is , for horse it is and for horse it is . If tie is not possible, the probability that one of these will win the race is:
