TNPSC Exam-GROUP- II - Subject wise analysed questions and Answers- Mental Aptitude-Part-2

TNPSC Exam-GROUP- II - Subject wise analysed questions and Answers- Mental Aptitude-Part-2

TNPSC GROUP – II 

Mental Aptitude – April 2010

 

             √   0.169       =  

27.           0.00144

                        130                                                     12

            A)        120                                         B)      130

                        0.13                                                    13      

C)        12                                            D)        12

Ans : (A)

28.       If the actual value of an item is 415 and its estimated value is 400, the absolute error is

            A)        -15                              B)        15

            C)        00375                         D)        -0.0361

Ans : (B)

29.       The ratio of two number is 3:8 and their difference is 115 the larger

number is

            A)        66                                B)        46

            C)        184                             D)        96

Ans : (C)

30.       The arithmetic mean of the number 1,2, ……, n is

 

            A)        n(n+1) (2n+1)                                   B)        n(n+1)²

                                 6                                                      4

            C)        (n+1)                                                   D)        n(n+1)

               2                                                                4

Ans : (C)

31.       If selling price of 16 items is same as the cost price of20 items, then

there is a

            A)        loss of 20%                           B)        loss of 25%

            C)        gain of 20%                                       D)        gain of 25%

Ans : (D)

32.       The value of log₁₀ √  10 √      10 √ 10….a is

            A)        4                                  B)        3

            C)        2                                  D)        1

Ans : (D)

 

TNPSC GROUP – II 

Mental Aptitude – March 2009

33.       The average of 11 numbers is 60. If the average of first six numbers is 58 and that of the last six is 63, the value of the sixth number is

            A)        66                                            B)        65

            C)        63                                            D)        64

Ans : (A)

34.       Ten years ago A was half of B in age. If the ration of their present ages is 3:4, what will be total of their present ages?

A)        8 years                                   B)        20 years

            C)        30 years                                 D)        35 years

Ans : (D)

35.       The population of a town is 18,000. It increased by 10% during the first year and by 20% during the second year. The population after 2 years will be

            A)        19,800                                    B)        21,600

            C)        23,760                                    D)        None of  these

Ans : (C)

36.       If the radius of a circle is decreased by 50%, then its area is reduced by

            A)        25%                                        B)        50%

            C)        75%                                        D)        None of these

Ans : (C)

37.       Formula for the calculation of co-efficient of variation is

                           Mean                                               S.D                                                                

    

        A)          S.D       x 100                 B)      Mean      x 100

                       

                      (S.D.) (Mean)                            100  

 

C)               100                                   D)    (S.D.) (Mean)

Ans : (B)

38.       If Q₁, Q₂, and Q₃ represent the first , second and third quartiles of a data, then co-efficient of quartile deviation is

            A)        Q₃ – Q₁                                   B)        Q₃ – Q₁ – 2Q₂

 

                             2                                                           Q₃ – Q₁

            C)        Q₃ – Q₁                                   D)        Q₃ + Q₁

                       

           Q₃ + Q₁                                                     2

Ans : (C)

39.       S.D. of  { 2,  4,  5,  6,  8 }   is

            A)        2                                              B)        5

            C)        6                                              D)        8

Ans : (A)

40.       Mode of { 12,  7,  3,  17,  7,  10,   7,  9,  14 }

            A)        3                                              B)        7

            C)        10                                            D)        13

Ans : (B)

41.       Find the odd man out :

            A)        Computer                              B)        Printer

            C)        Mouse                                    D)        Program

Ans : (D)

42.       Which one of the following is NOT a software ?

            A)        SPSS                                     B)        Windows

            C)        FORTRAN                             D)        Excel

Ans : (C)

43.       The population of a city is 1,76,400. IF is increases at the rate of 5% per annum, then the population after 2 years is

            A)        1,94,481                                 B)        1,94,000

            C)        2,00,000                                 D)        1,92,481

Ans : (A)

TNPSC GROUP – II 

Mental Aptitude – Nov 2007

44.       Deduction is the process of Reasoning which proceeds from

            A)        particular to universal

B)        particular to particular

            C)        Universal to particular

D)        universal to universal

Ans : (C)

45.       Choose the correct answer :

            A)        ‘A’ proposition is conditional proposition

B)        ‘A’ proposition is categorical proposition

            C)        ‘A’ proposition is hypothetical proposition

D)        ‘A’ proposition is disjunctive proposition

Ans : (B)

46.       Choose the correct answer :

            A)        The convert of E proposition is E

B)        The Convert of O proposition is A

            C)        The convert of I proposition is O

D)        The convert of A proposition is E

Ans : (A)

47.       5 mangoes and 4 oranges cost as much as 3 mangoes and 7 oranges. What is the ratio of the cost of one mango to that of one orange?

            A)        4:3                               B)        1:3

            C)        3:2                               D)        5:2

Ans : (C)

48.       (x + y ) : ( x – y ) = 4 : 1, then (x² = y²) : (x² – y²) =

           

A)        25 : 9                          B)        16 : 1

            C)        8 : 17                          D)        17 : 8

Ans : (D)

 

  √7 + √5

49.                             is equal to

             √7 - √5

 

            A)        6 + √35                       B)        6 - √35

            C)        2                                  D)        1

Ans : (A)

50.       Find the odd man out : 5, 7, 9, 17, 23, 37.

           

A)        5                                  B)        9

            C)        37                                D)        23

Ans : (B)