__QUANT QUIZ-12 BASED ON__

__PROBABILITY__

**1. Two persons A and B appear in an interview for two vacancies. If the probabilities of their selections are ¼ and 1/6 , respectively, then the probability that none of them is selected, is;**

**a. 5/8**

**b. 5/12**

**c. 1/12**

**d. 1/24**

**e. none of these**

**Directions (2- 4): Study the given information carefully and answer the questions that follow.**

**A basket contains 4 red, 5 blue and 3 green marbles**

**.**

**2. If two marbles are drawn at random, what is the probability that both are red:**

**a. 3/7**

**b. ½**

**c. 2/11**

**d. 1/6**

**e. none of these**

**3. If three marbles are picked at random, what is the probability that at least one is blue:**

**a. 7/12**

**b. 37/44**

**c. 5/12**

**d. 7/44**

**e. none of these**

**4. If three marbles are picked at random, what is the probability that either all are green or all are red:**

**a. 7/44**

**b. 7/12**

**c. 5/12**

**d. 1/44**

**e. none of these**

**5. What is the probability that a card drawn at random from a pack of 52 cards is either a king or a spade:**

**a. 17/52**

**b. 4/13**

**c. 3/13**

**d. 13/52**

**e. none of these**

**6. The probability of getting a composite number when a six-faced unbiased die is tossed is:**

**a. ¼**

**b. 1/3**

**c. ½**

**d. 1**

**e. none of these**

**7. Two unbiased dice are thrown simultaneously .The probability of getting the sum divisible by 3, is:**

**a. 11/36**

**b. 12/36**

**c. 13/36**

**d. 17/36**

**e. none of these**

**8. The probability that a leap year selected at random contains 53 Sundays , is:**

**a. 7/366**

**b. 26/183**

**c. 1/7**

**d.2/7**

**e. none of these**

**9. A number is chosen at random from the first 100 natural numbers. Find the probability that the number is odd or a multiple of 8:**

**a. 62/100**

**b. 47/100**

**c. 67/100**

**d. 43/100**

**e. none of these**

**10. Two dice are tossed once .Find the probability of getting the sum of scores on the dice as 5.**

**a. 1/6**

**b. 1/35**

**c. 1/9**

**d. 1/8**

**e. none of these**

**ANSWERS**

**1.A, 2.D, 3.B, 4.D, 5.B, 6.B, 7.A, 8.D, 9.A, 10.C,**