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CAT Sample Questions ›› Logical Reasoning

Analytical Section : Logical Reasoning

Below are the few questions on logical reasoning. Choose the correct answer from the following question.

Question 21

If P $ Q means P is the father of Q; P # Q means P is the mother of Q and P * Q means P is the sister of Q, then N # L $ P * Q shows which of the relation of Q to N?

  1. Nephew
  2. Mother
  3. Father
  4. Brother
  5. None of the above

Answer (e)

Explanation: As the sex of Q is not known, hence, data is inadequate

Question 22

Z is the mother of U; U is the sister of A; A is the father of J. How is Z related to J?

  1. Grand mother
  2. Aunty
  3. Mother
  4. Sister
  5. None of the others

Answer (a)

Explanation: Z is the mother of U
U is the sister of A
A is the father of J.
Therefore, J is the nephew or niece of U and Z is the grandmother of J.

Question 23

Showing towards a snap Anny said, "He is the only one son of the only son of my grandfather." How is the man in the snap related to Anny?

  1. Father
  2. Brother
  3. Nephew
  4. Sister
  5. None of the above

Answer (b)

Explanation: The man in the snap is son of Anny's grandfather's son that is., the son of Anny's father. Therefore, the boy is the brother of Anny.

Question 24

If Z $ B means Z is the brother of B; Z @ B means Z is the wife of B; Z # B means Z is the daughter of B and Z * B means Z is the father of B, which of the following indicates that U is the father-in-law of Y?

  1. Y @ V $ W # U * W
  2. Y = WS
  3. Y + W
  4. S - WY
  5. None of the above

Answer (a)

Explanation: Y @ V → Y is the wife of V - (1)
V $ W → V is the brother of W - (2)
W # U → W is the daughter of U
Hence, → V is the son of U - (3)
U * W → U is the father of W.
From (1) and (3), U is the father-in-law of Y.

Question 25

Showing towards a person, David said, "His one and only brother is the father of my daughter's father". How is the individual linked to David?

  1. Uncle
  2. Brother
  3. Father
  4. Husband
  5. Sister

Answer (a)

Explanation: Father of David's daughter's father is equal to David's father for this reason; the person in the brother of David's father. Therefore, the human being is the uncle of David.

Question 25

Pointing to a female an individual said, "The son of her one and only brother is the brother of my wife." How is the woman associated to the individual?

  1. Sister of father-in-law
  2. Uncle
  3. Sister
  4. Father
  5. None of the above

Answer (a)

Explanation: Brother of that individual wife is equal to brother-in-law of that individual. Therefore, the son of the women's brother is brother-in-law of the individual. Consequently, the brother of the female is the father-in-law of the individual. Therefore, the woman is the sister of the individual father-in-law.

Question 26

Pointing towards an individual, a woman said, "He is the one and only son of the mother of my mother." How is the lady connected to the man?

  1. Niece
  2. Nephew
  3. Mother
  4. Brother
  5. Father

Answer (a)

Explanation: The individual is the only son of the mother of the lady. For this reason, the man is the maternal uncle of the lady. So, the lady is the niece of the man.

Question 27

V's son Z is married with C whose sister X is married to E the brother of Z. How X is related to V?

  1. Daughter-in-law
  2. Sister
  3. Brother
  4. Mother
  5. Father

Answer (a)

Explanation: Since E is the brother of Z
Therefore, V is the father of E but X is the wife of E. Hence, X is the daughter-in-law of V.

Question 28

Showing towards Gargy, Nelson says, "I am the only daughter of the only son of his grandfather." How Nelson is connected to Gargy?

  1. Sister
  2. Nephew
  3. Mother
  4. Father
  5. None of the above

Answer (a)

Explanation: Nelson is the daughter of the only son of Gargy's grandfather. For this reason, it's obvious that Nelson is the sister of Gargy.

Question 29

  1. W5V means W is the father of V
  2. W9V means W is the sister of V
  3. W4V means W is the brother of V
  4. W3V means W is the wife of V

Which of the following means X is the mother of P?

  1. X3M5P
  2. KM34J
  3. TMN45
  4. HN78R
  5. None of the above

Answer (a)

Explanation: X3M is equal to X is the wife of M. M5K that is M is the father of P. Therefore, FX is the mother of P.

Question 30

Showing towards a girl Sharlock said, "She is the only daughter of the only sister of my father." How is Sharlock associated to the lady?

  1. Uncle
  2. Grandfather
  3. Mother
  4. Sister
  5. None of the above

Answer (b)

Explanation: The girl is the daughter of the sister of Sharlock's father. Hence, the lady is the cousin or Sharlock is the cousin of the lady.

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CAT Sample Logical Reasoning Question Number : 1-10 | 11-20 | 21-30 | 31-40
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