Class XII

Let X represent the difference between the number of heads and the number of tails obtained when a coin is tossed 6 times. What are possible values of X?
  1. X = 6, 4, 2, 0
  2. X = 6, 4, 2, 1
  3. X = 6, 3, 2, 1
  4. X = 6, 5, 2, 0
One card is drawn at random from a pack of 52 cards. What is the probability that the card drawn is a face card (Jack, Queen and King only)?
  1. . 1 13
  2. 3 13
  3. 1 4
  4. 9 52
Two dice are thrown simultaneously. What is the probability of getting two numbers whose product is even?
  1. 1 2
  2. 3 4
  3. 3 8
  4. 5 16
A bag contains 6 black and 8 white balls. One ball is drawn at random. What is the probability that the ball drawn is white?
  1. 3 4
  2. 4 7
  3. 1 8
  4. . 3 7
Which of the following conditions do Bernoulli trials satisfy?
  1. Each trial has exactly three outcomes: success or failure and the probability of success or failure remains the same in each trial.
  2. Each trial has exactly two outcomes: success or failure and the probability of success or failure can vary in each trial.
  3. Each trial has exactly two outcomes: success or failure and the probability of success or failure remains the same in each trial.
  4. Each trial has finite number of outcomes and the probability of each outcome remains the same in each trial.
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