Probability Questions Answers Online Quiz Test

• 1. In a throw of coin what is the probability of getting head.

  1. 1
  2. 2
  3. 1/2
  4. 0

• 2. In a throw of coin what is the probability of getting tails.

  1. 1
  2. 2
  3. 1/2
  4. 0

• 3. Two unbiased coins are tossed. What is probability of getting at most one tail ?

  1. \begin{aligned} \frac{1}{2} \end{aligned}
  2. \begin{aligned} \frac{1}{3} \end{aligned}
  3. \begin{aligned} \frac{3}{2} \end{aligned}
  4. \begin{aligned} \frac{3}{4} \end{aligned}

• 4. Three unbiased coins are tossed, what is the probability of getting at least 2 tails ?

  1. 1/3
  2. 1/6
  3. 1/2
  4. 1/8

• 5. In a throw of dice what is the probability of getting number greater than 5

  1. 1/2
  2. 1/3
  3. 1/5
  4. 1/6

• 6. What is the probability of getting a sum 9 from two throws of dice.

  1. 1/3
  2. 1/9
  3. 1/12
  4. 2/9

• 7. Two dice are thrown simultaneously. What is the probability of getting two numbers whose product is even ?

  1. 3/4
  2. 1/4
  3. 7/4
  4. 1/2

• 8. In a box, there are 8 red, 7 blue and 6 green balls. One ball is picked up randomly. What is the probability that it is neither blue nor green?

  1. 2/3
  2. 8/21
  3. 3/7
  4. 9/22

• 9. A card is drawn from a pack of 52 cards. The probability of getting a queen of club or a king of heart is

  1. 1/13
  2. 2/13
  3. 1/26
  4. 1/52

• 10. From a pack of 52 cards, 1 card is drawn at random. Find the probability of a face card drawn.

  1. 3/13
  2. 1/52
  3. 1/4
  4. None of above

• 11. A box contains 20 electric bulbs, out of which 4 are defective. Two bulbs are chosen at random from this box. The probability that at least one of these is defective is

  1. \begin{aligned} \frac{7}{19} \end{aligned}
  2. \begin{aligned} \frac{6}{19} \end{aligned}
  3. \begin{aligned} \frac{5}{19} \end{aligned}
  4. \begin{aligned} \frac{4}{19} \end{aligned}

• 12. A speaks truth in 75% of cases and B in 80% of cases. In what percentage of cases are they likely to contradict each other, narrating the same incident

  1. 30%
  2. 35%
  3. 40%
  4. 45%

• 13. From a pack of 52 cards, two cards are drawn together, what is the probability that both the cards are kings

  1. 2/121
  2. 2/221
  3. 1/221
  4. 1/13

• 14. A box contains 5 green, 4 yellow and 3 white balls. Three balls are drawn at random. What is the probability that they are not of same colour.

  1. 52/55
  2. 3/55
  3. 41/44
  4. 3/44

• 15. Bag contain 10 back and 20 white balls, One ball is drawn at random. What is the probability that ball is white

  1. 1
  2. 2/3
  3. 1/3
  4. 4/3

• 16. There is a pack of 52 cards and Rohan draws two cards together, what is the probability that one is spade and one is heart ?

  1. 11/102
  2. 13/102
  3. 11/104
  4. 11/102