TNPSC Group I Exam-Previous Year Question Paper-Subject wise Analysed Questions-Mental Ability-Part 3

TNPSC Group I Exam-Previous Year Question Paper-Subject wise Analysed Questions-Mental Ability-Part 3

51.       A shopkeeper marks his goods to gain 30%. But he allows 10% discount for down cash payment. His profit per cent is

A)        20%                            B)        17%

            C)        15%                            D)        13%

Answer : (B)

52.       Function(s) of statistics is/are

A)        collection of data

B)        compilation and tabulation of data

            C)        analysis of data

D)        all of these

Answer : (D)

53.       The total expenditure of family is Rs.1,080 and they are spending Rs.450, for food, Then to draw a pie diagram the degree value is

            A)        1978 - 79                   B)        1979 - 80

            C)        1980 - 81                   D)        1981 - 82

Answer : (C)

54.       Find out the missing observation of the following data with mean 5.

            2,6,5,3,8,2,-----, 9, 7,7,6.4

A)        3                                  B)        2

            C)        1                                  D)        0

Answer : (C)

55.       Data which are not collected by the organization for the specified, is known as

A)        primary data

B)        secondary data

            C)        categorical data

D)        quantitative data

Answer : (B)

56.       Marks obtained by 7 students in Computer Science are 5,40,60,90,80,65,55. The median value for the data is

A)        90                                B)        60

            C)        80                                D)        55

Answer : (B)

57.       Consider the following statements :

            Assertion (A)            :  Classification is the basis for tabulation.

            Reason (B)               :  First the data are classified and then tabulated.

            Now select your answer according to the coding scheme given below:

A)        Both (A) and (R) are true and (R) is the correct explanation of (A)

B)        Both (A) and (R) are true, but (R) is not the correct explanation of (A)

            C)        (A) is true, but (R) is false

D)        (A) is false, but (R) is true

Answer : (A)

58.       Given the following

           

Cause of Accident :	Fire	Traffic	Falls	Burns	Falling objects	Misc.
No. Accidents :	10	15	20	15	35	5

The suitable diagram for the above data is

A)        Bar diagram                         

B)        Histogram

            C)        Pie-diagram 

D)        13

Answer : (C)

59.       The table below gives the distribution of the age if women at the

time of marriage :

Age group (in years)	No. of Women
15 - 19	11
20 - 24	36
25 - 29	28
30 - 34	13
35 - 39	7
40 - 44	3
44 - 49	2

The given distribution is

A)        not contribution                   

B)        continuous

            C)        cumulative distribution

D)        smoothed distribution

Answer : (A)

60.       Consider the following statements :

            Assertion (A)            :  Diagrams can be used for comparison only

            Reason (B)               :  Diagrams cannot study mathematical relationship.

            Now select your answer according to the coding scheme given below:

A)        Both (A) and (R) are true

B)        (A) is true, but (R) is false

            C)        (A) is false, but (R) is true

D)        Both (A) and (R) are false

Answer : (D)

2010

61.       What is the correct value of q if X= cos q satisfies x²-3x+2=0 ?

A)        1                                  B)        0

            C)        -1                                 D)        p

Answer : (B)

62.       When the basis of classification is according to location or place, the classification is called …….. classification.

A)        Quantitative                          B)        Geographical

            C)        Qualitative                             D)        Chronological

Answer : (B)

 

                        1   i                      i  -1

63.       If A =  -i  1   , and B=    -1 -1 , then AB is

            1   0                                         i   0

A)        0   1                             B)        0   i

            0  0                                    -i   0

C)        0  0                             D)        0   1

Answer : (C)

64.       It is given that 2²² + 1 is completely divisible by a whole number. which of the following numbers is completely divisible by that number?

A)        2 ¹⁶⁺¹                           B)        2 ^16-1   

C)        7 X 2³³                        D)        2 ⁹⁶⁺¹  

Answer : (D)

65.       Data verbalized on a continuum scale like excellent, good, fair and poor

            are known as          

A)        Raw data                   B)        Ratio data

            C)        Interval data              D)        Ordinal data

Answer : (D)

66.       A can do piece of work in 80 days. He alone works at it for 20 days and then B alone finished the remaining work in 36 days. In how many days can A and B  together complete the work?

A)        25 days                      B)        30 days

            C)        35 days                      D)        40 days

Answer : (B)

67.       The average of 25 results is 18. The average of first twelve of them is 14 and that of last twelve is 17. The thirteenth result is

A)        87                                B)        78

            C)        67                                D)        none of these

Answer : (B)

68.       A girl started walking from her house, She first walked for 3 km towards east, then she turned towards north and moved 4 km in that direction.

How far is the girl away from her house?

A)        3 km south                B)        3 km north

            C)        5 km west                  D)        5 km north - east

Answer : (D)

           

                                                                1:  1:  1

69.       The sides of a triangle are in the ratio of    2   3   4 , If the perimeter is 52 cm

            then the length of the smallest side is

A)        9 cm                            B)        10 cm

            C)        11cm                          D)        12 cm

Answer : (D)

70.       The average based on the position of ordered observation is

          

A)        X                                 B)        Median

            C)        Mode                          D)        Standard Deviation

Answer : (B)

71.       A current of 8 A flows through 10 turn coil of a tangent galvanometer having a diameter of 16 cm. The field on the centre of the coil is

A)        2.5 A-turn/m              B)        25 A-turn/m

            C)        100 A -turn/m            D)        250 A-turn/m

Answer : (B)

72.       Find the missing number:

                                 ?        2

                       

                            730              28

                                  344   126

A)        1000                           B)        1001

            C)        999                             D)        1002

Answer : (B)

73.       If log_a (ab) = x, then log_b (ab) is

           1                                                 x

A)        x                                  B)        x + 1

               x                                             x

            C)        1 - x                             D)        x - 1

Answer : (A)

74.       The area of a circle is 220 sq. cm. The area of the biggest square inscribed in the circle will be

A)        49 cm²                        B)        70 cm²

            C)        140 cm²                      D)        150 cm²

Answer : (C)

75.       The ages of Ravi and Raja are in the ratio 5:12. After 6 years, the ratio of their ages will be 8:15. What is the difference between their ages?

A)        14 years                     B)        16 years

            C)        12 years                     D)        13 years

Answer : (A)