QUANT QUIZ ON PROBABILITY

Direction (1-3): Study the following information carefully and answer the questions that follow:

A committee of 12 persons is to be formed from 9 men and 8 women

1.     In how many ways this can be done if at least 5 men to have to be included in a committee

(1) 6062                 (2) 6000           

(3) 6010                 (4) 6005                       

(5) None of these

2.     In how many of these committee the women are in majority

(1) 1008                 (2) 1100           

(3) 120                   (4) 1225                       

(5) None of these

3.     In how many of these committee the men are in majority

(1) 2000                 (2) 2702

(3) 2705                 (4) 2700                       

(5) None of these

Directions (4-5): Study the following information carefully and answer the questions that follow:

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

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

(1)  7/44                              (2) 7/12

(3) 5/12                               (4) 1/44            

(5) None of these

5.     If three marbles are picked at random what is the probability that at least one is blue

(1)  7/12                              (2)37/44           

(3)5/12                                (4) 7/44                        

(5) None of these 

   
Directions (6-10): Study the following information carefully and answer the questions that follow:

6.     Japal sold a mobile a gain of 5% had he sold it for Rs 72 more he would have gain 13%. Find the cost price of mobile.

(1) 900                               (2) 910             

(3) 870                               (4) 840             

(5) None of these

7.     Rakhi sold a article to Pawan at a gain of 20%. Pawan sold it to Purnima at a gain of 10% and Purnima sold it to Shikha at a gain of 12 ½%.  If Shikha pay Rs 59.40 what didi it cost to Rakhi?

(1) Rs 22                           (2) Rs 40          

(3) Rs 18                           (4) Rs 24                      

(5) None of these

8.     Vijay starts a business with Rs 3500. 5 months later Ramesh join him as his partner. After a year profit are divided in the ratio 2: 3. How much did Ramesh contributed?

(1) 5000                             (2) 6000           

(3) 8000                             (4) 9000                       

(5) None of these

9.     Find the difference between C.I. and S.I. on Rs 13000 at 4% per annum for 3 years.

(1) 63.23                            (2) 73.25          

(3) 68.25                            (4) 70.29                      

(5) 59.29

10.  The sum of 6 consecutive odd numbers of set A is 252. What is the sum of largest and second lowest number of set of 5 consecutive even numbers which average is 11 less than largest number of set A.

(1) 70                                (2) 74               

(3) 78                                (4) 76               

(5) None of these

Answers:

1	1
2	1
3	5
4	4
5	2
6	1
7	5
8	4
9	1
10	2