32 JEE Main 2021 Probability previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2021 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.
The probability that a randomly selected 2 - digit number belongs to the set n ∈ N : 2 n - 2 is a multiple of 3 }…
Let A denote the event that a 6 -digit integer formed by 0 , 1 , 2 , 3 , 4 , 5 , 6 without repetitions, be divisible by…
Words with or without meaning are to be formed using all the letters of the word EXAMINATION . The probability that the…
Four dice are thrown simultaneously and the numbers shown on these dice are recorded in 2 × 2 matrices. The probab…
Let A ,   B and C be three events such that the probability that exactly one of A and B occurs is ( 1 - k ) , the…
The probability distribution of random variable X is given by: X 1 2 3 4 5 P ( X ) K 2 K 2 K 3 K K Let p = P ( 1 <…
In a group of 400 people, 160 are smokers and non-vegetarian; 100 are smokers and vegetarian and the remaining 140 are…
Let X be a random variable with distribution. x - 2 - 1 3 4 6 P ( X = x ) 1 5 a 1 3 1 5 b If the mean of X is 2 . 3 and…
Let 9 distinct balls be distributed among 4 boxes, B 1 ,   B 2 ,   B 3 and B 4 . If the probability that B 3…
A student appeared in an examination consisting of 8 true-false type questions. The student guesses the answers with eq…
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