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UPSC Civil Services (IAS) Prelims Exam: CSAT Logical Reasoning Set I

Jun 30, 2016 12:15 IST

    UPSC IAS Prelims Exam General Studies Paper II is qualifying in nature but still it has to be qualified and score not less than 33% in Paper II CSAT. So, in order to qualify the CSAT Paper of UPSC IAS Prelims Exam, an aspirant has to make strategy for attempting questions of Paper II CSAT correctly. Here, we have provided Multiple Choice Questions of Logical Reasoning for CSAT Exam of UPSC IAS Prelims Exam.

    Category: Sequence of figure

    In each of the questions given below which one of the four answer figures should come next, if the sequence were continued:


     Answer (a)


    Two and four 'V' shaped elements get inverted alternately.


    Answer (d)


    One of the designs (with white triangle at the centre) moves clock wise while the other design (with black triangle at the centre) moves anti clock wise.

    Category: Analytical reasoning

    3.The following question consists of a figure containing groups of letters with two terms missing represented by ‘?’. Choose the terms that can best replace the missing terms.

    a) 5 and QR
    b) 5 and AB
    c) 2 and UV
    d) 4 and GH

    Answer (b)


    4.Select the missing number from the given responses.

      a) 53 and Z
      b) 51 and Y
      c) 50 and Y
      d) 52 and U

    Answer (b)


    Fig 1, 9x9-5x3= 66, similarly figure 2 and 3 to give 51
    Alphabet series:
    All the alphabets beginning from figure 1 are evenly placed after 5 positions of the preceding
    Alphabet. Like,


    From the given equilateral triangle below, A, B and C run along the sides in clockwise direction and stop after covering 1 ½ sides. Which of the following statements is true?

    a)  B is to the West of C
    b)  A is to the south-west of B
    c)  B is to the north-west of A
    d)  C is to the north-east of A.

    Answer (b)


    The new positions are shown below:

    Category: Direction Sense

    6.A woman wants to go to the market to the east of her home and leaves her home towards south at 11 am. She reaches a junction from where the road to the left takes her to the grocer and one on the right takes her to the salon. If she goes straight she could reach office in 10 minutes. In which direction is the market with respect to her position?

    a) East
    b) West
    c) Northwest
    d) Northeast

    Answer (d)


     Category: Ranking

    i)  Six students P, Q, R, S, T and U participated in a self-evaluation test of English and Reasoning.
    ii) The total marks of P in English and was just above R and in Reasoning just above U.
    iii) Q was just above R in Reasoning but he scored less than S in English.
    iv) U got more marks than S and T in Reasoning, but did not perform as well in English as in Reasoning as compared to S and T.
    v) No one is in between R and S in English and R and P in Reasoning.

    7.Who got the highest marks in Reasoning?

    a) A
    b) B
    c) C
    d) Data inadequate

    Answer (b)

    8.Which of the following students has scored the least in Reasoning?

    a) Only D
    b) Only E
    c) Only D or E
    d) None of these

    Answer (c)


    Category: Blood relation

    Directions (Questions 9 - 10): Read the following information carefully and answer the questions given below it:

    A 7 B means A is the mother of B.
    A 5 B means A is the sister of B.
    A 3 B means A is the father of B.
    A 9 B means A is the brother of B.

    9.Which of the following means that N is the maternal uncle of M?

    a)  N 9 P 5 L 7 E 5 M
    b)  N 5 Y 7 A 9 M
    c)  N 9 C 7 F 3 M
    d)  None of these

    Answer (a)


    Though gender of M is not known but N remains maternal uncle of M.

    10.How is A related to E in A 7 B 3 C 5 D 9 E?

    a)  Mother
    b)  Grandmother
    c)  Sister
    d)  Sister in law

    Answer (b)


     Though gender of E is not known but A remains to be a grandmother.


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