Two squares are chosen at random on a chessboard. What is the probability that they have a side in common

1.  1/18

2.  64/4032

3.  63/64

4.  1/9

View Answer  
4
Correct Answer :

1/18


Explanation :
No Explanation available for this question

In a game there are 70 people in which 40 are boys and 30 are girls, out of which 10 people are selected at random. One from the total group, thus selected is selected as a leader at random. What is the probability that the person, chosen as the leader is a boy

1.  4/7

2.  4/9

3.  5/7

4.  2/7

View Answer  
4
Correct Answer :

4/7


Explanation :
No Explanation available for this question

Sum of digits of a 5 digit number is 41. Find the probability that such a number is divisible by 11

1.  2/15

2.  11/36

3.  3/35

4.  6/35

View Answer  
4
Correct Answer :

6/35


Explanation :
No Explanation available for this question

Four unit squares are chosen at random on a chessboard. What is the probability that three of them are of one colour and fourth is of opposite colour

1.  80/427

2.  160/427

3.  320/1281

4.  640/1281

View Answer  
4
Correct Answer :

640/1281


Explanation :
No Explanation available for this question

Shiwani thought of a two-digit number and divided the number by the sum of the digits of the number. He found that the remainder is 3. Devesh also thought of a two-digit number and divided the number by the sum of the digits of the number. He also found that the remainder is 3. Find the probability that the two digit number thought by Shiwani and Devesh is TRUE

1.  1/15

2.  1/14

3.  1/13

4.  1/12

View Answer  
4
Correct Answer :

1/14


Explanation :
No Explanation available for this question

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

View Answer  
4
Correct Answer :

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

View Answer  
4
Correct Answer :

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

View Answer  
4
Correct Answer :

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

View Answer  
4
Correct Answer :

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

View Answer  
4
Correct Answer :

0.10


Explanation :
No Explanation available for this question
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