TNPSC Exam-GROUP- II - Subject wise analysed questions and Answers- Mental Aptitude-Part-3

TNPSC Exam-GROUP- II - Subject wise analysed questions and Answers- Mental Aptitude-Part-3

51.       A train travels for 3 hours, the first hour at 10 km/hour and the remaining 2 hours at 25 km/hour. what is the average speed?

           

A)        10 km / hour                          B)        15 km / hour

            C)        20 km / hour                          D)        25 km / hour

Ans : (C)

52.       The three values which divide a given data into four equal parts are called

           

A)        Averages                               B)        Quartiles

            C)        Deciles                                   D)        Percentiles

Ans : (B)

53.       Which one of the following is more suitable to represent data on a family budgets?

           

A)        Bar diagram             

B)        Multiple bar diagram

            C)        percentage bar diagram

            D)        Pie diagram

Ans : (D)

54.       Find the mode of X when

           

X :	2	4	5	8	10	13
f :	5	7	10	15	3	2

A)        5                                  B)        8

            C)        10                                D)        13

Ans : (B)

55.       What is the Acronym to  DBMS?

           

A)        Data Base Medical Science

B)        Data Base Management System

            C)        Data Base Monitoring System

D)        None of  these

Ans : (B)

56.       A person is moving towards a plane mirror with a velocity of 1 m/sec. The image will approach the moving person with a relative velocity of

           

A)        0.5 m/sec.                  B)        1 m/sec.

            C)        2 m/sec.                     D)        3 m/sec.

Ans : (C)

57.       In the year 1980 a person’s age was 8 times that of his son. In 1988 (eight years later) the father’s age became ten times that of his son’s age in 1980. The ages of the son and the father in 1990 were respectively.

           

A)        16 years, 58 years

B)        15 years, 50 years

            C)        14 years, 43 years

D)        13 years, 34 years

Ans : (C)

 

TNPSC GROUP – II 

Mental Aptitude – May 2007

58.       A Shopkeeper sells 10 toffees for a rupee, gaining thereby 20%. How many did he buy for a rupee?

            A)        11                                B)        12

            C)        15                                D)        13

Ans : (B)

59.       2A = 3B = 4C, then A:B:C is

            A)        2  :  3  :  4                               B)        4  :  3  :  2

            C)        6  :  4  :  3                               D)        3  :  4  :  6

Ans : (C)

60.       If the selling price of an article  3  is times of its cost price, then the profit the  percentage is

            A)        33  1                           B)        12  1

                              4                                         4

            C)        20 1                            D)        20 1

                           2                                         3

Ans : (A)

61.       Two numbers are in the ratio 3 : 5. if each number is increased by 10, the ratio becomes 5 : 7. The numbers are

            A)        3,5                                           B)        12, 20

            C)        15,25                                      D)        18,30

Ans : (C)

62.       Median of x = {10,2,14,5,8,16} is

            A)        8                                  B)        9

            C)        10                                D)        11

Ans : (B)

63.       Which one of the following properties is not satisfied by mean?

            A)        It is a simple measure

B)        It is easy to compute

            C)        It is a stable measure

            D)        It is not affected by extreme values

Ans : (D)

64.       If L and S are the largest and smallest values of a data, then the range is measured by the formula

            A)        L + S                           B)        L  - S

            C)        S – L                           D)        LS

Ans : (B)

65.       If the standard deviation of {x₁, x₂, x₃} is 2, then the standard deviation

{ x₁, + 5, x₂ + 5, x₃ + 5 } is

            A)        0                                  B)        2

            C)        5                                  D)        7

Ans : (B)

66.       Which one of the following is not correct?

            A)        CPU is a hardware

B)        WAITE is a FORTRAN command

            C)        VDU is a software

D)        DIR is a computer command

Ans : (C)

67.       What is the decimal equivalent for (10110)₂ ?

            A)        12                                B)        22

            C)        32                                D)        42

Ans : (B)

 

TNPSC GROUP – II 

Mental Aptitude –

Original Question paper - 2003

68.       How many times do the hands of a clock form right angles in a day?

            A)        22                                B)        24

            C)        44                                D)        123

Ans : (C)

69.       x = 3 ,then the value of 2x + y     is

             

           2y  2                                2x - 2y

            A)        1                                  B)        7

                        7

            C)        7.1                               D)        6.8

Ans : (B)

70.       If a = Ö 6   + Ö 5  and  b = Ö 6 - Ö 5 then 2a2 - 5ab + 2b2 = ?

           

            A)        43                                B)        39

            C)        31                                D)        27

Ans : (B)

  

71.       In an examination, 35% of the candidates failed in G.K. and 25% failed in English. If 10%  of the candidates failed in both, then the percentage of candidates passed will be

            A)        40 %                           B)        45 %

            C)        48 %                           D)        50 %

Ans : (D)

72.       Find the first quartile:

           

X :	2 - 4	4 - 6	6 - 8	8 - 10	10 - 12
f :	1	5	8	5	1

            A)        5.2                               B)        5.4

            C)        5.6                               D)        5.8

Ans : (C)

73.       From the following data, find the number of items below "x = 50 " :

           

X :	20 - 30	30 - 40	40 - 50	50 - 60	60 -70
f :	5	10	14	7	2

            A)        25                                B)        28

            C)        29                                D)        30

Ans : (C)

74.       If X and Y are related as Y = 2 + 3X and 3X = 12 + Y, then the co- efficient of correlation between X and Y is

            A)        - 0.5                            B)        0

            C)        0.5                               D)        30

Ans : (D)

75.       If quartile deviation of a series is 2 and Q₁ = 20 find the value of Q₃

            A)        22                                B)        24

            C)        26                                D)        30

Ans : (B)

76.       Find the odd man out :

            A)        CAD                           B)        CAM

            C)        Graphics                    D)        Printer

Ans : (D)

77.       Which of the following is correct?

            A)        DCE is a software

            B)        COBOL is a programming language

            C)        BAR CHART is a hardware

            D)        LOAD is a programming language

Ans : (B)