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

Probability question

2023 · 24 Jan · Shift 2 · Q44
Guest · try one question or challengeGuest · try one question or challenge
  1. PYQ Library
  2. /JEE Main
  3. /Mathematics
  4. /Probability
  5. /2023 · 24 Jan · Shift 2 · Q44

Probability question

2023 · 24 Jan · Shift 2 · Q44

JEE MainMathematicsProbabilityNumerical+4 / −1
Three urns A, B and C contain 4 red, 6 black; 5 red, 5 black; and λ\lambdaλ red, 4 black balls respectively. One of the urns is selected at random and a ball is drawn. If the ball drawn is red and the probability that it is drawn from urn C is 0.4 then the square of the length of the side of the largest equilateral triangle, inscribed in the parabola y2=λxy^2=\lambda xy2=λx with one vertex at the vertex of the parabola, is :
Numerical answer
PreviousNext

More from Probability

  • Let M be the maximum value of the product of two positive integers when their sum is 66. Let the sample space S={x∈Z:x(66−x)≥95​M} and the event A={x∈S:xisamultipleof3}…2023 · MCQ
  • Let N be the sum of the numbers appeared when two fair dice are rolled and let the probability that N−2,3N​,N+2 are in geometric progression be 48k​. Then the value of k is :2023 · MCQ
  • 25% of the population are smokers. A smoker has 27 times more chances to develop lung cancer than a non smoker. A person is diagnosed with lung cancer and the probability that this person is a smoker is 10k​. Then the value of k…2023 · Numerical
  • Fifteen football players of a club-team are given 15 T-shirts with their names written on the backside. If the players pick up the T-shirts randomly, then the probability that at least 3 players pick the correct T-shirt is :2023 · MCQ
  • Let S={w1​,w2​,......} be the sample space associated to a random experiment. Let P(wn​)=2P(wn−1​)​,n≥2. Let A={2k+3l:k,l∈N} and B={wn​:n∈A}. Then P(B) is equal to :2023 · MCQ
  • If an unbiased die, marked with −2,−1,0,1,2,3 on its faces, is thrown five times, then the probability that the product of the outcomes is positive, is :2023 · MCQ
  • A bag contains six balls of different colours. Two balls are drawn in succession with replacement. The probability that both the balls are of the same colour is p. Next four balls are drawn in succession with replacement and the…2023 · Numerical
  • A bag contains 6 balls. Two balls are drawn from it at random and both are found to be black. The probability that the bag contains at least 5 black balls is :2023 · MCQ