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Probability

Get chapter-wise JEE Main & Advanced questions with solutions

Q JEE MAIN_2021_
Let 9 distinct balls be distributed among 4 boxes, $B_1, B_2, B_3$ and $B_4$. If the probability than $B_3$ contains exactly 3 balls is then...
JEE Main Mathematics Medium
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Q JEE MAIN 2021 S2
A student appeared in an examination consisting of 8 true-false type questions. The student guesses the answers with equal probability. The smallest value of n...
JEE Main Mathematics Medium
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Q JEE MAIN 2021 S2
A fair coin is tossed $n$-times such that the probability of getting at least one head is at least 0.9 . Then the minimum value...
JEE Main Mathematics Medium
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Q JEE MAIN 2019
The minimum number of times one has to toss a fair coin so that the probability of observing at least one head is at least...
JEE Main Mathematics Medium
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Q JEE MAIN 2021
The probability that a randomly selected 2 -digit number belongs to the set $\left\{n \in N:\left(2^n-2\right)\right.$ is a multiple of 3$\}$ is equal to:
JEE Main Mathematics Medium
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Q JEE MAIN 2021
Let $x$ be a random variable such that the probability function of a distribution is given by $P(X=0)=\frac{1}{2}, P(X=j) =\frac{1}{3^j}(j=1,2,3, \ldots, \infty)$. Then the mean...
JEE Main Mathematics Medium
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Q JEE MAIN 2021
The probability of selecting integers $a \in[-5,30]$ such that $x^2+2(a+4) x-5 a+64>0$, for all $x \in R$, is :
JEE Main Mathematics Medium
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Q JEE MAIN 2021
Words with or without meaning are to be formed using all the letters of the word EXAMINATION. The probability that the letter M appears at...
JEE Main Mathematics Easy
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Q JEE MAIN_2021_
Four dice are thrown simultaneously and the numbers shown on these dice are recorded in 2 × 2 matrices. The probability that such formed matrices...
JEE Main Mathematics Medium
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Q JEE MAIN 2021
Let A be a set of all 4-digit natural numbers whose exactly one digit is 7. Then the probability that a randomly chosen element of...
JEE Main Mathematics Easy
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