Tuesday 15 July 2014

TNPSC Group I Exam-Previous Year Question Paper-Subject wise Analysed Questions-Mental Ability-Part 1

TNPSC Group I Exam-Previous Year Question Paper-Subject wise Analysed Questions-Mental Ability-Part 1

TNPSC GROUP – I 2013
Mental Ability


1.         The average marks in English obtained by 300 students is 45:The average marks of first 100 and last 100 students are 70 are 20 respectively.  The average marks of the remaining 100 students is
            A)        70                                B)        20
            C)        45                                D)        50









Answer : (C)









2.         Struges rule for determining the number of classes (K) in a frequency
table is
            A)        K = 1 + 3.32 log10 N            
B)        K = 1 - 3.32 log10
C)        K = 1 + 2.32 log10 N                                    
D)        K = 1 + 3.32 loge N  









Answer : (A)









3.         Consider the following five processes with the length of the CPU burst time given in milliseconds together with their arrival time and priority.
            process         Arrival time   Burst time     Priority
               P1                          0      10                   4
               P2                          0        3                   1
             P1                            0      10                   4
              P4                           3      16                   3
              P5                           7       2                   5

            In priority scheduling the average turnaround time will be

            A)        20.6 ms                                  B)        18.6 ms
            C)        21.6 ms                                  D)        22.5 ms
           








            Ans: (A)










4.         What should come in the place of question mark (?)
            25       52    19         13   49    32      16    ?     17

                      18                        14                     40

A)        63                                B)        73
C)        53                                D)        83









Answer : (A)









5.         Horizontal bar diagram is used for
            A)        Qualitative data
B)        Data varying over time
            C)        Data varying over space    
D)        (A) or (C)
           








Answer : (D)









6.         Classification is the process of arranging data in
            A)        Different columns
            B)        Different rows
            C)        Grouping of related facts in different classes                       
                        D)        None of these









            Answer : (C)









7.         Indentify the mission letter:
                                        A
                                  F    K
                             P    U     Z
                          E     J    O    ? 

            A)        R                                 B)        S
            C)        T                                  D)        W









Answer : (C)









8.         What is the value of A if each letter represents a different digit?
(A3B) (B) = 217B
            A)        3                                  B)        4
            C)        5                                  D)        7
           








Answer : (B)









9.         A perfect dice is tossed twice. Find the probability of getting a total of 9.

                                                                                    1
            A)        9                                              B)       9

                        2                                                          9         
C)        9                                              D)        2









Answer : (B)









10.       Find out wrong number in the following sequence:
            22, 23, 66, 99, 121, 279, 594
            A)        33                                B)        121
            C)        279                             D)        594









Answer : (C)









11.       Identify the missing:
                        8          12        9
                        10        7       20
                        3         10      ?
            A)        13                                B)        14
            C)        4                                  D)        5









Answer : (C)









12.       The sum of two numbers is 20. Their product in 96, then their H.C.F is
            A)        2                                  B)        4
            C)        8                                  D)        10









Answer : (B)









13.       If TAMIL is VCMKN and HINDI is JKNFK then ODISA is
            A)        RTGFC                                  B)        QGIUC
            C)        SFJUA                                   D)        QFIUC









Answer : (D)









14.       Find the smallest number exactly divisible by 12, 15, 20 and 27
            A)        540                             B)        570
            C)        240                             D)        270









Answer : (A)









15.       Nest term in the sequence 7, 11, 9, 11, 17, 14, 15, 23, 19, …. is
            A)        19, 25, 22                               B)        19, 31, 20
            C)        19, 29, 24                               D)        19, 27, 23









Answer : (C)









16.       What amount should be repaid to clear a loan of Rs.6,000 borrowed at
    2
6      % simple interest per annum for a period of 1 year and 6 months?
    3 

            A)        6,800                                      B)        6,600
            C)        6,200                                      D)        6,400









Answer : (B)









17.       If he area of an equilateral triangle is 4 3 m2, then is perimeter is
            A)        16 m                                       B)        12 m
            C)        18 m                           D)        9 m









Answer : (B)









18.       The radius of sphere B is one fourth of radius of sphere A. Then the
ratio of volume between A and B is
A)        1 :16                                       B)        16 : 1
            C)        1 : 64                                      D)        64 : 1









Answer : (D)









19.       If the volume and surface area if a sphere are numerically the same, then its radius is
            A)        3 units                                    B)        2 units
            C)        1 units                                    D)        4 units









Answer : (A)









20.       A man can do a piece of work in 5 day, but with his son he can do it in 3 days. In what time can the son do it alone?
            A)        6 ½ days                                B)        7 days
            C)        7 ½ days                                D)        8 days









Answer : (C)









21.       Distribution of students in seven institutions M,N,P,Q,R,S and T is given in the Pie chart shown below. Find the total number of students in the institutions M and S, if the total number of students in all the seven institutions is 27300.
                                                   P    N
                                                  12% 17%
                                            Q13%          M 17%
                                                18%       14%
                                              R     14%        T
                                                     S
A)        8463                                       B)        7516
            C)        9127                                       D)        9404









Answer : (D)









22.       The average of a boy’s marks in 7 subjects is 75. His average in 6 subjects other than science is 72. How many marks did he get in Science?
            A)        72                                            B)        93
            C)        90                                            D)        94









Answer : (B)









24.       Age in years : 10-20  20-30  30-40  40-50  50-60
            No. of persons : 8        24       40        22       6
The relative frequency of persons  belonging to the class interval 30 - 4 is

            A)        0.60                                        B)        0.40
            C)        40                                            D)        60









Answer : (B)









25.       Sector              : Agriculture  Manufacturing  Services
            Revenue collections : 22%        40%                   38%     
When represented in a pie diagram. the angle that represents manufacturing is
            A)        72°                                           B)        96°
            C)        144°                                        D)        216°










Answer : (C)

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