Doubts
Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents
Sign in to save progress →
Doubts
Sign in

Probability question

2025 · 28 Jan · Shift 1 · Q36
Guest · try one question or challengeGuest · try one question or challenge
  1. PYQ Library
  2. /JEE Main
  3. /Mathematics
  4. /Probability
  5. /2025 · 28 Jan · Shift 1 · Q36

Probability question

2025 · 28 Jan · Shift 1 · Q36

JEE MainMathematicsProbabilityMCQ+4 / −1
Three defective oranges are accidently mixed with seven good ones and on looking at them, it is not possible to differentiate between them. Two oranges are drawn at random from the lot. If xxx denote the number of defective oranges, then the variance of xxx is
  1. A
    26/7526 / 7526/75
  2. B
    14/2514/2514/25
  3. C
    18/2518 / 2518/25
  4. D
    28/7528 / 7528/75
PreviousNext

More from Probability

  • Bag B1​ contains 6 white and 4 blue balls, Bag B2​ contains 4 white and 6 blue balls, and Bag B3​ contains 5 white and 5 blue balls. One of the bags is selected at random and a ball is drawn from it. If the ball is white, then the…2025 · MCQ
  • Let S be the set of all the words that can be formed by arranging all the letters of the word GARDEN. From the set S, one word is selected at random. The probability that the selected word will NOT have vowels in alphabetical order is:2025 · MCQ
  • Bag 1 contains 4 white balls and 5 black balls, and Bag 2 contains n white balls and 3 black balls. One ball is drawn randomly from Bag 1 and transferred to Bag 2. A ball is then drawn randomly from Bag 2. If the probability, that the ball…2025 · MCQ
  • A bag contains 8 balls, whose colours are either white or black. 4 balls are drawn at random without replacement and it was found that 2 balls are white and other 2 balls are black. The probability that the bag contains equal number of…2024 · MCQ
  • Let Ajay will not appear in JEE exam with probability p=72​, while both Ajay and Vijay will appear in the exam with probability q=51​. Then the probability, that Ajay will appear in the exam and Vijay…2024 · MCQ
  • Three urns A, B and C contain 7 red, 5 black; 5 red, 7 black and 6 red, 6 black balls, respectively. One of the urn is selected at random and a ball is drawn from it. If the ball drawn is black, then the probability that it is drawn from…2024 · MCQ
  • If the mean of the following probability distribution of a radam variable X : is 946​, then the variance of the distribution is Includes table2024 · MCQ
  • In a tournament, a team plays 10 matches with probabilities of winning and losing each match as 31​ and 32​ respectively. Let x be the number of matches that the team wins, and y be the number of matches that team…2024 · Numerical