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All questions of Logical Reasoning for SSC CGL Exam

Select the related word from the given alternatives.
BIRD : AEROPLANE : : FISH : ?
  • a)
    FISHERMAN
  • b)
    SOFA
  • c)
    BOAT
  • d)
    GLASSES
Correct answer is option 'C'. Can you explain this answer?

Om Desai answered
A bird’s mode of transport is through the air. The man-made creation that serves a similar purpose is the aeroplan.
Similarly, a fish’s medium of transport is through water. The corresponding man-made mode of transport is a boat.

In the question, select the related number from the given alternatives.
7584 : 4251 ∷ 4563 : ?
  • a)
    2367
  • b)
    2451
  • c)
    2310
  • d)
    1230
Correct answer is option 'D'. Can you explain this answer?

Rhea Reddy answered
In 7584 : 4251;
7 – 3 = 4; 5 – 3 = 2; 8 – 3 = 5; 4 – 3 = 1
Similarly;
4 – 3 = 1; 5 – 3 = 2; 6 – 3 = 3; 3 – 3 = 0Hence, “1230” is correct option.

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
1, 8, 21, 40, ?
  • a)
    24
  • b)
    48
  • c)
    144
  • d)
    65
Correct answer is option 'D'. Can you explain this answer?

Aisha Gupta answered
The followed pattern is:
First number = 1
(1 × 3) – 2 = 1
(2 × 6) – 4 = 8
(3 × 9) – 6 = 21
(4 × 12) – 8 = 40
(5 x 15) – 10 = 65 
Hence, 65 is the missing term.

In the following questions, find the odd one out from the given alternatives.
  • a)
    YZBDF
  • b)
    QSUWY
  • c)
    TVXZB
  • d)
    IKMOQ
Correct answer is option 'A'. Can you explain this answer?

Tanvi Shah answered
Here the pattern followed is that each letter is increased by 2 than the previous one.
1. YZBDF = Y + 1 = Z;         Z + 2 = B;         B + 2 = D;        D + 2 = F
2. QSUWY = Q + 2 = S;         S + 2 = U;         U + 2 = W;       W + 2 = Y
3. TVXZB = T + 2 = V;         V + 2 = X;         X + 2 = Z;         Z + 2 = B
4. IKMOQ = I + 2 = K;          K + 2 = M;        M + 2 = O;       O + 2 = Q
In YZBDF, Z is only one more than Y hence it doesn’t follow the pattern and hence it is odd one out

In the following question, select the odd number pair from the given alternatives.
  • a)
    6 : 72
  • b)
    9 : 162
  • c)
    12 : 288
  • d)
    16 : 476
Correct answer is option 'D'. Can you explain this answer?

Rhea Reddy answered
Here 2nd number is twice the number of the square of 1st number
1) 6 : 72 = 6 × 6 = 36 × 2 = 72
2) 9 : 162 = 9 × 9 = 81 × 2 = 162
3) 12 : 288 = 12 × 12 = 144 × 2 = 288
4) 16 : 476 = 16 × 16 = 256 × 2 = 512 which is not equal to 476
Hence 16 : 476 is the odd number pair

DirectionsIn the following question, you have to identify the correct response from the given premises stated according to following symbols.
Q. If < represent ÷, > represent +, ^ represent –, × represent <, + represent >, - represent= and V represent x
  • a)
    8 > 4 < 2 ^ 6 V 3 – 11
  • b)
    8 ^ 4 < 2 > 6 V 3 + 11
  • c)
    8 V 4 ^ 2 > 6 < 3 × 11
  • d)
    8 V 4 > 2 < 6 ^ 3 × 11
Correct answer is option 'B'. Can you explain this answer?

Sagar Sharma answered

Explanation:

Given Premises:
- < represents ÷
- > represents +
- ^ represents –
- × represents <
- + represents >
- - represents =
- V represents x

Correct Premise:
- 8 ^ 4 < 2 > 6 V 3 + 11

Explanation:
- 8 ^ 4 = 8 - 4 = 4
- 2 > 6 = 2 + 6 = 8
- 4 < 8
- 6 V 3 = 6 x 3 = 18
- 18 + 11 = 29
- Therefore, the correct answer is 4 < 8.

Therefore, the correct response is option B.

Directions: Study the following information carefully and answer the questions given below.
Seven boys P, Q, R, S, T, U and V are stand in a straight line facing north as follows.
1. R is standing between S and V.
2. Q is standing to the immediate left of T.
3. V is standing between R and Q.
4. U is Fourth left of V and S is immediate right of P.
Q. Who is standing exactly in the middle?
  • a)
    R
  • b)
    P
  • c)
    T
  • d)
    V
Correct answer is option 'A'. Can you explain this answer?

Rhea Reddy answered
R is standing between S and V
⇒ S       R         V
Q is standing to the immediate left of T.
⇒ Q     T
V is standing between R and Q
⇒ R       V         Q
U is fourth left of V and S is immediate right of P
⇒ U P S R V
Combining all three situations we get,
⇒ U P S R V Q T
R is standing at the middle.

In a certain code, MISTER is written as RETSIM. How will COUSIN be written?
  • a)
    NISCOU
  • b)
    NISUOC
  • c)
    SINCOU
  • d)
    SINUOC
Correct answer is option 'B'. Can you explain this answer?

Indukant answered
Writing the MISTER in a reverse order, it becomes RETSIM.
Similarly, COUSIN can be decode by writing the word in the reverse order.
It becomes NISUOC. So, the correct option is b.

For the following question find the odd letter from the given alternatives:
  • a)
    A
  • b)
    I
  • c)
    Y
  • d)
    H
Correct answer is option 'D'. Can you explain this answer?

Tanvi Shah answered
Position of A = 1, I = 9, Y = 25, H = 8 are in English alphabet.
Now, A, I, and Y are at perfect square position in English alphabet but H is at perfect cube position in English alphabet.
Therefore, “H” is odd one among given alternatives.

Point to Kapil (a boy), Shilpa said, “His mother’s brother is the father of my son Ashish.” How is Kapil related to Shilpa?
  • a)
    Sister-in-law
  • b)
    Nephew
  • c)
    Niece
  • d)
    Aunt
Correct answer is option 'B'. Can you explain this answer?

Kapil's mother's brother will relate to Kapil as uncle, in that way Shilpa said that Kapil's uncle is her son's father, so we can understand Kapil's uncle is her husband. Hence finally Shilpa related to Kapil as aunt and Kapil will become nephew.

If D = 4,
EAT = 100,
then LAN = ?
  • a)
    26
  • b)
    90
  • c)
    168
  • d)
    162
Correct answer is option 'C'. Can you explain this answer?

Tanvi Shah answered
D = 4, EAT = 5 × 1 × 20 = 100
LAN = 12 × 1 × 14 = 168
Hence, LAN = 168 is correct option.

SPEECH is to DUMB as SIGHT is to –
  • a)
    Audience
  • b)
    Eyes
  • c)
    Blind
  • d)
    Mouth
Correct answer is option 'C'. Can you explain this answer?

Aisha Gupta answered
SPEECH and DUMB are opposite to each other. Using similar logic, SIGHT and BLIND are opposite to each other.
Hence, “Blind” is the answer.

Rahul walks 30 meters towards south. Then turns to his right and starts walking straight till he completes another 30 meters. Then again turning to his left he walks for 20 meters. He then turns to his left and walks for 30 meters. How far is he from his initial position?
  • a)
    50 meters
  • b)
    30 meters
  • c)
    10 meters
  • d)
    60 meters
Correct answer is option 'A'. Can you explain this answer?

Naroj Boda answered


Since Rahul has walked 30 meters to the right, and later 30 meters to the left, he is back in the same line which he originally started in.
Therefore, the total distance from the initial point will be given by the distance he covered towards the south, i.e. 30 + 20 = 50 meters.

A series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series.
ADC, GJI, MPO, ?
  • a)
    SXQ
  • b)
    SWQ
  • c)
    SVU
  • d)
    SUW
Correct answer is option 'C'. Can you explain this answer?

Tanvi Shah answered
ADC = A + 3 = D; D – 1 = C
But, C + 4 = G
GJI = G + 3 = J; J – 1 = I
But, I + 4 = M
MPO = M + 3 = P; P – 1 = O
But, O + 4 = S
SVU = S + 3 = V; V – 1 = U
Hence, “SVU” will be next term in series.

A is shorter than B but taller than C. D is shorter than A but taller than C and E is shorter than B but taller than A. The shortest person is ?
  • a)
    B
  • b)
    C
  • c)
    A
  • d)
    D
Correct answer is option 'B'. Can you explain this answer?

1) A is shorter than B but taller than C.
⇒ C < A < B
2) D is shorter than A but taller than C.
⇒ C < D < A < B
3) E is shorter than B but taller than A.
⇒ C < D < A < E < B
Therefore, C is the shortest.

A series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series.
1, 2, 4, 7, ?, 16
  • a)
    14
  • b)
    8
  • c)
    11
  • d)
    15
Correct answer is option 'C'. Can you explain this answer?

Aarav Sharma answered
Given series: 1, 2, 4, 7, ?, 16

To find the missing term, we need to observe the pattern in the given series.

Observations:
- The difference between the first and second term is 2 (2 - 1 = 1).
- The difference between the second and third term is 2 (4 - 2 = 2).
- The difference between the third and fourth term is 3 (7 - 4 = 3).

From the given observations, we can conclude that the differences between consecutive terms are increasing by 1 each time.

Identifying the missing term:
- The difference between the fourth and missing term should be 4, as it follows the pattern of increasing differences.
- So, the missing term can be found by adding 4 to the fourth term, which is 7.
- 7 + 4 = 11.

Therefore, the missing term in the given series is 11.

Verification:
Let's verify the answer by checking the difference between the missing term and the last term.
- The difference between the missing term (11) and the last term (16) is 5.
- The difference between the third and fourth term is 3.
- The difference between the second and third term is 2.
- The difference between the first and second term is 1.

As we can see, the differences between consecutive terms are increasing by 1 each time, which confirms that the missing term is 11.

Conclusion:
The correct alternative to complete the series is 11 (option C).

Find the missing letter from the given responses.
AHN, BIO, CJP,?
  • a)
    COU
  • b)
    FQK
  • c)
    DKQ
  • d)
    QXD
Correct answer is option 'C'. Can you explain this answer?

Tanvi Shah answered
A + 1 = B; B + 1 = C; C + 1 = D
H + 1 = I; I + 1 = J; J + 1 = K
N + 1 = O; O + 1 = P; P + 1 = Q
Hence the option “DKQ” is correct.

Hospital is 12 km toward east of Ankit’s house. His school is 5 km toward south of hospital. What is the shortest distance between Ankit’s house and school?
  • a)
    16 km
  • b)
    12 km
  • c)
    13 km
  • d)
    17 km
Correct answer is option 'C'. Can you explain this answer?

Rhea Reddy answered
Direction path can be traced as:

⇒ AC = √[(AB)2 + (BC)2]
⇒ AC = √[(12)2 + (5)2]
⇒ AC = √[144 + 25]
⇒ AC = √169
⇒ AC = 13 km
Hence, Shortest distance between Ankit house and School is 13 km.

Directions: Select the odd letter form the given responses.
  • a)
    ADBF
  • b)
    BECG
  • c)
    DHEI
  • d)
    MPNR
Correct answer is option 'C'. Can you explain this answer?

Rajesh Khanna answered
1) ADBF = A + 3 = D; D – 2 = B; B + 4 = F
2) BECG = B + 3 = E; E – 2 = C;C + 4 = G
3) DHEI = D + 4 = H; H – 3 = E;E + 4 = I
4) MPNR = M + 3 = P; P - 2 = N; N + 4 = R
Hence, “DHEI” is different from other responses.

Arun is the father of Cattie and Danny is the son of Bettie. Ernest is the brother of Arun. If Cattie is the sister of Danny. How is Bettie related to Ernest?
  • a)
    Daughter
  • b)
    Mother
  • c)
    Cousin
  • d)
    Sister in law
Correct answer is option 'D'. Can you explain this answer?

Aisha Gupta answered
Below table shows symbol and their description,
1) Arun is the father of Cattie and Danny is the son of Bettie.

2) Ernest is the brother of Arun.

3) Cattie is the sister of Danny. So Arun is the spouse of Bettie.

Thus Bettie is Ernest’s sister in law

Which is the sixth letter to the right of the sixteenth letter from the left in the alphabet?
(A B C D E F G H I J K L M N O P Q R S T U V W X Y Z)
  • a)
    F
  • b)
    Q
  • c)
    U
  • d)
    V
Correct answer is option 'D'. Can you explain this answer?

Rhea Reddy answered
Given series: (Left) A B C D E F G H I J K L M N O P Q R S T U V W X Y Z (Right)
Sixteenth from Left : P
Sixth right from P: V
The sixth letter to the right of the sixteenth letter from the left in the alphabet is V.
Hence, 'V' is the correct option.

Find the odd letters from the given alternatives.
  • a)
    OMQ
  • b)
    TPR
  • c)
    TRV
  • d)
    VTX
Correct answer is option 'B'. Can you explain this answer?

Aarav Sharma answered
Odd Letters from the Given Alternatives

To find the odd letters from the given alternatives, we need to analyze each option and identify any patterns or differences among the letters.

Option a) OMQ
- The letters in this option are O, M, and Q.
- There doesn't seem to be any clear pattern or difference among these letters.
- We will keep this option for further analysis.

Option b) TPR
- The letters in this option are T, P, and R.
- The odd letter in this option is P.
- Hence, option b) is different from the other options.

Option c) TRV
- The letters in this option are T, R, and V.
- There doesn't seem to be any clear pattern or difference among these letters.
- We will keep this option for further analysis.

Option d) VTX
- The letters in this option are V, T, and X.
- There doesn't seem to be any clear pattern or difference among these letters.
- We will keep this option for further analysis.

Final Analysis
- From the analysis of the given options, we have identified that option b) (TPR) is different from the other options.
- The odd letter in option b) is P.

Therefore, the correct answer is option 'B' (TPR).

In the following question number of letters skipped in between adjacent letters in the series increases one each time. Which of the following series observe the rule?
  • a)
    RTWAG
  • b)
    EGJNR
  • c)
    NOQUZ
  • d)
    CEHLQ
Correct answer is option 'D'. Can you explain this answer?

Aisha Gupta answered
1. RTWAG = R + 2 = T; T + 3 = W; W + 4 = A; A + 6 = G
2. EGJNR = E + 2 = G; G + 3 = J; J + 4 = N; N + 4 = R
3. NOQUZ = N + 1 = O; O + 2 = Q; Q + 4 = U;U + 5 = Z
4. CEHLQ = C + 2 = E; E + 3 = H; H + 4 = L; L + 5 = Q
Only “CEHLQ” follows the given rule.

Select the related letters from the given alternatives.
DCBA : WXYZ : : IJKL : ?
  • a)
    SRQP
  • b)
    QPON
  • c)
    RQPO
  • d)
    PONM
Correct answer is option 'C'. Can you explain this answer?

Aarav Sharma answered
The first phrase consists of letters written in reverse alphabetical order (D → C → B → A). The corresponding phrase is in regular alphabetical order (W → X → Y → Z).
Similarly, the given phrase is in regular alphabetical order (I → J → K → L). Therefore, the required word must be in reverse alphabetical order.
Further, the last letter of the first phrase (A) is the first letter of the alphabet, and the last of the second word (Z) is the first in reverse alphabetical order.

L is the 12th in regular order, and therefore the last letter of the required word must end with the same position in reverse order, i.e. O.
Therefore, the required word is RQPO.

Some equations have been solved on the basis of certain system. Find the answer for the unsolved equation on that basis. If
98 - 39 - 27 = 31,
87 - 38 - 34 = 20,
then 79 - 25 - 12 = ?
  • a)
    51
  • b)
    22
  • c)
    42
  • d)
    15
Correct answer is option 'A'. Can you explain this answer?

Engineers Adda answered
Here the logic is as follows,
9 × 8 = 72, 3 × 9 = 27, 2 × 7 = 14
⇒ 72 – 27 – 14 = 31
8 × 7 = 56, 3 × 8 = 24, 3 × 4 = 12
⇒ 56 – 24 – 12 = 20
Similarly,
7 × 9 = 63, 2 × 5 = 10, 1 × 2 = 2
⇒ 63 – 10 – 2 = 51
Hence the required number is 51.

You have to consider the statement to be true, even if it seems to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follow from the given statements.
Statements:
All teachers are actors.
Some actors are women.
Conclusion:
I. All teachers are women.
II. Some women are teachers.
III. Some women are actors.
IV. All actors are teachers. 
  • a)
    Only Conclusion I follows
  • b)
    Only Conclusion II & IV follows
  • c)
    Only Conclusion III follows
  • d)
    None of the conclusions follows.
Correct answer is option 'C'. Can you explain this answer?

Engineers Adda answered
each statement after analyzing the least possible Venn diagram.
Conclusions:
I. All teachers are women → It’s possible but not definite, hence false.
II. Some women are teachers → It’s possible but not definite, hence false.
III. Some women are actors → It’s definite, hence true.
IV. All actors are teachers → It’s possible but not definite, hence false.
Therefore, only conclusion III will follow.

A series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series.
XFB, UGD, RIG, OLK, ?
  • a)
    OLJ
  • b)
    LNK
  • c)
    LPP
  • d)
    OLM
Correct answer is option 'C'. Can you explain this answer?

Rajesh Khanna answered
The relation between the letters is as follows,
X – 3 = U, U – 3 = R, R – 3 = O, O – 3 = L
F + 1 = G, G + 2 = I, I + 3 = L, L + 4 = P
B + 2 = D, D + 3 = G, G + 4 = K, K + 5 = P
Hence the next term is LPP.

If CUPBOARD is written as CXPBXXRD, how will CRAFT be written?
  • a)
    CRAXT
  • b)
    CRXFT
  • c)
    CRXFX
  • d)
    cannot be determined.
Correct answer is option 'B'. Can you explain this answer?

Sagar Sharma answered
Explanation:

To find the pattern in the given word transformation, we need to analyze the changes made to each letter.

Analysis:
- In the word "CUPBOARD", the first letter 'C' remains unchanged.
- The second letter 'U' is transformed into 'X'.
- The third letter 'P' is transformed into 'P'.
- The fourth letter 'B' is transformed into 'B'.
- The fifth letter 'O' is transformed into 'X'.
- The sixth letter 'A' is transformed into 'X'.
- The seventh letter 'R' is transformed into 'R'.
- The eighth letter 'D' is transformed into 'D'.

Pattern:
- The second, fifth, and sixth letters are transformed into 'X'.
- The rest of the letters remain unchanged.

Applying the pattern to the word "CRAFT":
- The first letter 'C' remains unchanged.
- The second letter 'R' is transformed into 'X'.
- The third letter 'A' is unchanged.
- The fourth letter 'F' is transformed into 'X'.
- The fifth letter 'T' remains unchanged.

Therefore, applying the pattern to the word "CRAFT", it would be written as "CRXFT" (option B).

A word given in capital letters is followed by four words. Out of these only one cannot be formed by using the letters of the given word. Find out that word.
PRESTIGIOUS
  • a)
    PRESS
  • b)
    PIOUS
  • c)
    TIGER
  • d)
    ​RIGID
Correct answer is option 'D'. Can you explain this answer?

Knowledge Hub answered
1. PRESS = can be formed as PRESTIGIOUS.
2. PIOUS = can be formed as PRESTIGIOUS.
3. TIGER = can be formed as PRESTIGIOUS.
4. RIGID = cannot be formed as D is not present.
Hence “RIGID” is the correct option

If P denotes +, Q denotes - , R denotes '÷', and S denotes ×, then : 18S36R12Q6P7 = ?
  • a)
    115
  • b)
    65
  • c)
    55
  • d)
    25
Correct answer is option 'C'. Can you explain this answer?

Tanvi Shah answered
By putting in the required operators into the system, we get :
18 × 36 / 12 – 6 + 7
On applying BODMAS, we get
18 x (36/12) – 6 + 7
= (18 x 3) – 6 + 7
= 54 + 1
= 55

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