19 JEE Main 2019 Probability previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2019 previous-year questions from the Probability chapter of Mathematics. Each links to a full solution with a verified answer key. To see the whole chapter across all years, visit the Probability chapter hub.
Assume that each born child is equally likely to be a boy or girl. If two families have two children each, then the con…
In a random experiment, a fair die is rolled until two fours are obtained in succession. The probability that the exper…
The minimum number of times one has to toss a fair coin so that the probability of observing at least one head is at le…
Four persons can hit a target correctly with probabilities 1 2 , 1 3 , 1 4 and 1 8 respectively. If all hit at the targ…
In a game, a man wins Rs. 100 if he gets 5 or 6 on a throw of a fair die and loses Rs. 50 for getting any other number…
Two newspapers A and B are published in a city. It is known that 25 % of the city population reads A and 20 % reads B w…
Minimum number of times a fair coin must be tossed so that the probability of getting at least one head is more than 99…
If the probability of hitting a target by a shooter, in any shot is 1 3 , then the minimum number of independent shots…
An unbiased coin is tossed. If the outcome is a head then a pair of unbiased dice is rolled and the sum of the numbers…
In a class of 60 students, 40 opted for NCC, 30 opted for NSS and 20 opted for both NCC and NSS. If one of these studen…
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