# An eight-digit telephone number consists of exactly two zeroes. One of the digits is repeated thrice. Remaining three digits are all distinct. If the first three digits (from left to right) are 987, then find the probability of having only one 9, one 8 and one 7 in the telephone number.

1.  1/18

2.  1/20

3.  1/10

4.  5/47

4

1/10

Explanation :
No Explanation available for this question

# The game 'Chunk-a-Luck' is played at carnivals in some parts of Europe. Its rules are as follows: If you pick a number from 1 to 6 and the operator rolls three dice. If the number you picked comes up on all three dice, the operator pays you Rs. 3 ; If it comes up on two dice, you are paid Rs. 2; And it comes up on just one dice, you are paid Rs. 1. Only if the number you picked does not come up at all, you pay the operator Rs. 1. The probability that you will win money playing in this game is:

1.  0.52

2.  0.753

3.  0.42

4.  None of the above

4

0.42

Explanation :
No Explanation available for this question

# Sun Life Insurance company issues standard, preferred and ultra-preferred policies. Among the company's policy holders of a certain age, 50% are standard with the probability of 0.01 dying in the next year, 30% are preferred with a probability of 0.008 of dying in the next year and 20% are ultra-preferred with a probability of 0.007 of dying in the next year. If a policy holder of that age dies in the next year, what is the probability of the decreased being a preferred policy holder

1.  0.1591

2.  0.2727

3.  0.375

4.  None of these

4

0.2727

Explanation :
No Explanation available for this question

# Two urns contain 5 white and 7 black balls and 3 white and 9 black balls respectively. One ball is transferred to the second urn and then one ball is drawn from the second urn. Find the probability that the first ball transferred is black, given that the ball drawn is black

1.  13/23

2.  11/23

3.  14/23

4.  7/23

4

14/23

Explanation :
No Explanation available for this question

# McDonald's ran a campaign in which it gave game cards to its customers. These game cards made it possible for customers to win hamburgers, French fries, soft drinks, and other fast-food items, as well as cash prizes. Each card had 10 covered spots that could be uncovered by rubbing them with a coin. Beneath three of these spots were "No Prize" signs. Beneath the other seven spots were names of prizes, two of which were identical. For example, one card might have two pictures of a hamburger, one picture of a Coke, one of French fires, one of a milk shake, one of 5 Dollar, one of 1000 Dollar and three "No Prize" signs. For this card the customer could win a hamburger. To win on any card, the customers had to uncover the two matching spots (which showed the potential prize for that card) before uncovering a "No Prize"; any card with a "No Prize" uncovered was automatically void. Assuming that the two matches and the three "No Prize" signs were arranged randomly on the cards, what is the probability of a customer winning

1.  0.10

2.  0.15

3.  0.12

4.  0.18

4

0.10

Explanation :
No Explanation available for this question

# A bag contains 10 balls numbered from 0 to 9. the balls are such that the person picking a ball out of the bag is equally likely to pick anyone of them. A person picked a ball and replaced it in the bag after noting its number. He repeated this process 2 more times. What is the probability that the ball picked first is numbered higher than the ball picked second and the ball picked second is numbered higher than the ball picked third

1.  72/100

2.  3/25

3.  4/5

4.  1/6

4

3/25

Explanation :
No Explanation available for this question

# There are three similar boxes, containing (i). 6 black and 4 white balls (ii). 3 black and 7 white balls (iii). 5 black and 5 white balls, respectively. If you choose one of the three boxes at random and from that particular box picks up a ball at random, and find that to be black, what is the probability that the ball picked up from the second box

1.  14/30

2.  3/14

3.  7/30

4.  7/14

4

3/14

Explanation :
No Explanation available for this question

# Amit, Sumit and Pramit go to a seaside town to spend a vacation there and on the first day everybody decides to visit different tourist locations. After breakfast, each of them boards a different tourist vehicle from the nearest bus-depot. After three hours, Sumit who had gone to a famous beach, calls on the mobile of Pramit and claims that he has observed a shark in the waters. Pramit learns from the local guide that at that time of the year, only eight sea-creatures (including a shark) are observable and the probability of observing any creature is equal. However, Amit and Pramit later recall during their discussion that Sumit has a reputation for not telling the truth five out of six times. What is the probability that Sumit actually observed a shark in the waters

1.  1/36

2.  1/30

3.  5/36

4.  1/24

4

1/36

Explanation :
No Explanation available for this question

# is written on cards. What is the probability of drawing a card with an even number written on it

1.  1/2

2.  97/200

3.  99/199

4.  97/199

4

99/199

Explanation :
No Explanation available for this question

# Dexter was born between October 6th and 10th (6th and 10th excluding). His year of birth is also known. What is the probability of Dexter being born on a Saturday

1.  0 or 1/3

2.  1/7 or 3/7

3.  1/3 or 1/7

4.  Cannot be determined

4