31000+ Important MCQs for CDS

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31000+ MCQs for CDS are available here. You can learn these questions for your better preparation. Questions are available with its correct answer. You can check the correct answer of any questions by clicking the option or show answer button.
Have a nice day and enjoy learning CDS MCQ Questions.

📊 Math
Q. From a pack of cards, what is the probability of drawing a face card?
  • (A) 3/13
  • (B) 1/4
  • (C) 1/13
  • (D) 1/2
💬 Discuss
✅ Correct Answer: (A) 3/13

Explanation: Face cards are Jack, Queen, and King. Total face cards = 12. Probability = 12/52 = 3/13.

📊 Math
Q. What is the probability of getting an odd number on a single roll of a die?
  • (A) 1/6
  • (B) 1/3
  • (C) 1/2
  • (D) 2/3
💬 Discuss
✅ Correct Answer: (C) 1/2

Explanation: Odd numbers are 1, 3, and 5. Favorable outcomes = 3 out of 6. Probability = 1/2.

📊 Math
Q. A letter is chosen randomly from the word 'PROBABILITY'. What is the probability of selecting the letter 'B'?
  • (A) 1/11
  • (B) 2/11
  • (C) 3/11
  • (D) 1/10
💬 Discuss
✅ Correct Answer: (B) 2/11

Explanation: The word PROBABILITY has 11 letters, and 'B' appears 2 times. Probability = 2/11.

📊 Reasoning
Q. Pointing to a man, Ravi said, 'He is the son of my mother's only son.' How is the man related to Ravi?
  • (A) Brother
  • (B) Son
  • (C) Nephew
  • (D) Cousin
💬 Discuss
✅ Correct Answer: (B) Son

Explanation: Ravi's mother's only son is Ravi himself. Therefore, the son of Ravi is the man being referred to.

📊 Reasoning
Q. A woman introduces a man as the son of her mother's brother. How is the man related to the woman?
  • (A) Brother
  • (B) Uncle
  • (C) Cousin
  • (D) Nephew
💬 Discuss
✅ Correct Answer: (C) Cousin

Explanation: The son of a woman's maternal uncle is her cousin.

📊 Reasoning
Q. If A is the brother of B, B is the sister of C, and C is the father of D, how is A related to D?
  • (A) Father
  • (B) Grandfather
  • (C) Uncle
  • (D) Brother
💬 Discuss
✅ Correct Answer: (C) Uncle

Explanation: A, B, and C are siblings. Since C is D's father, A is D's uncle.

📊 Reasoning
Q. P is the father of Q. R is the wife of P. S is the brother of Q. How is R related to S?
  • (A) Mother
  • (B) Sister
  • (C) Aunt
  • (D) Grandmother
💬 Discuss
✅ Correct Answer: (A) Mother

Explanation: R is P's wife and P is the father of S, therefore R is S's mother.

📊 Reasoning
Q. If X is the son of Y's daughter, then X is Y's ____.
  • (A) Son
  • (B) Brother
  • (C) Grandson
  • (D) Nephew
💬 Discuss
✅ Correct Answer: (C) Grandson

Explanation: X is the son of Y's daughter, making X the grandson of Y.

📊 Reasoning
Q. Introducing a boy, Ramesh said, 'He is the son of the daughter of my father.' How is the boy related to Ramesh?
  • (A) Brother
  • (B) Son
  • (C) Nephew
  • (D) Cousin
💬 Discuss
✅ Correct Answer: (C) Nephew

Explanation: The daughter of Ramesh's father is Ramesh's sister. Her son is Ramesh's nephew.

📊 Reasoning
Q. A man said, 'My father's father is the only son of your grandfather.' How is the man related to you?
  • (A) Father
  • (B) Brother
  • (C) Uncle
  • (D) Cousin
💬 Discuss
✅ Correct Answer: (B) Brother

Explanation: Your grandfather's only son is your father. The man's grandfather is your father, making the man your brother.