Postal Assistant/Sorting Assistant (PA/SA) Recruitment Examination 2012-13

Postal Assistant/Sorting Assistant (PA/SA) Recruitment Examination 2012-13: Model Questions from Mathematics

Mathematics

1.      A person can buy 3 more copies of a book if the shopkeeper reduces the price by 20% by paying Rs.720. The original price of the book is

a.      Rs.320

b.      Rs.45

c.      Rs.50

d.      Rs.60

2.      A circle of radius 12cm has its radius decreased by 25%. The percentage of decrease in its area is

a.      25

b.      37.5

c.      42.25

d.      43.75

3.      A is 10 years older than B. X years ago, A was twice as old as B. If B is 12 years old now, then X is

a.      1

b.      2

c.      3

d.      4

4.      4 persons work 4 hours per day and complete a job in 4 days. If 8 persons work 8 hours per day, in how many days will the job be completed?

a.      8 days

b.      4 days

c.      2 days

d.      1 day

5.      A train passes a platform 60 meters long in 20 seconds and a man in 12 seconds. The speed of the train is

a.      18 Km/hr

b.      27 Km/hr

c.      36 Km/hr

d.      40 Km/hr

6.      The average age of students in a class is 15.8 years. The average age of boys in the class is 16.4 years and that of girls is 15.4 years. The ratio of number of boys to the number of girls in the class is

a.      1 : 2

b.      3 : 4

c.      3 : 5

d.      2 : 3

7.      If a number is added with its square and when 28 is added , the resulting number is 300. What is that number?

a.      18

b.      15

c.      16

d.      14

8.      The HCF of two numbers is 6 and their LCM is 1260. If one of the numbers is 126, the other number is

a.      30

b.      60

c.      90

d.      15

9.      What would be the maximum value of Q in the following equation? 5P9 + 3R7 + 2Q8 = 1114

a.      8

b.      7

c.      5

d.      None

10. A pole 6m in height cast a shadow 4 m long at a time when shadow of a tree measures 16m. The height of the tree is

a.      18m

b.      24m

c.      30m

d.      36m

Answers

1.      D

2.      D

3.      B

4.      D

5.      A

6.      B

7.      C

8.      B

9.      D

10. B

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