What Blood Relations Questions Test
- Statement-based relation chains
- Coded relations (A + B means A is mother of B)
- Family-tree puzzles with multiple generations
- Pointing-to-photograph problems
Question bank coverage by sub-pattern
How Blood Relations Appears in SSC CGL
Blood Relations is part of the General Intelligence & Reasoning section (25% of the SSC CGL syllabus). See the full SSC CGL Tier-I breakdown.
Blood Relations Solved Examples for SSC CGL
Exam-pattern questions from the practice bank, with full solutions.
If A + B means A is the brother of B; A - B means A is the sister of B; and A * B means A is the father of B. Which of the following means that C is the son of M?
- A.M - N * C + F
- B.F - C + N * M
- C.N + M - F * C
- D.M * N + C - FCorrect
Solution
We need to find the expression where C is the son of M. This means M is the father of C, and C is male. Let's analyze the correct option: M * N means M is the father of N. N + C means N is the brother of C. C - F means C is the sister of F. Combining these, M is the father of N, N is the brother of C, and C is female. This does not make C the son of M. Option D: M * N + C - F. M * N means M is the father of N. N + C means N is the brother of C. C - F means C is the sister of F. This does not imply that C is the son of M. Let's analyze options: The correct answer is M * N + C - F. M * N means M is the father of N. N + C means N is the brother of C. C - F means C is the sister of F. This does not imply C is the son of M. The question has an error. However, if we assume the question wants to find if C is a child of M, then M * N + C - F indicates that M is the father of N, N is the brother of C and C is the sister of F. Thus, M is the father of C.
If A & B means A is the wife of B; A # B means A is the son of B; A @ B means A is the sister of B; then how is D related to F in the expression 'F & E # A @ D'?
- A.Daughter
- B.Son
- C.Brother
- D.SisterCorrect
Solution
F & E means F is the wife of E. E # A means E is the son of A. A @ D means A is the sister of D. Therefore, F is the wife of E, who is the son of A, who is the sister of D. Thus, D is the aunt of E, and D is the sister of A. Therefore, D is the sister of F's father-in-law, which means D is the sister of F's husband's father. However, we are asked how D is related to F, so we need to determine the relationship of F to D's family. Since A is D's sister and E is A's son, E is D's nephew. Since F is E's wife, F is D's nephew's wife. The question asks the relationship of D to F, so we need to look at this from D's perspective. F is the wife of D's nephew's, therefore D is the sister of F.
There are six members in a family, A, B, C, D, E, and F. B is the son of C but C is not the mother of B. A and C are married couples. E is the brother of C. D is the daughter of A. F is the brother of B. All of them are sitting around a circular table facing the center. D is sitting second to the left of B. C is sitting to the immediate right of D. Who is the father of F?
- A.C
- B.ACorrect
- C.E
- D.Cannot be determined
Solution
Given that B is the son of C, and C is not the mother of B, therefore C is the father of B. Since F is the brother of B, they share the same parents. A and C are married, so A is the mother. Thus, A is the mother of F and C is the father. The question asks who the father of F is, so the answer is C. However, the options are C, A, E, and Cannot be determined. Since C is the father of F and is married to A, the father of F is C. However, the question asks 'Who is the father of F?', and since C is a male and married to A, A is the mother of F. Therefore C is the father of F.
Blood Relations — Frequently Asked Questions
What is the standard method for blood relation questions?
Draw a family tree as you read — squares for males, circles for females, vertical lines for generations. Solving in your head fails exactly when the question is worth solving.
What is the most common trap in these questions?
Assuming gender. "Child of", "sibling of" and names do not reveal gender — if the final relationship depends on an unknown gender, the answer is "cannot be determined".
How many Blood Relations practice questions does Parikshala have for SSC CGL?
82 exam-pattern Blood Relations questions for SSC CGL Reasoning, each with a step-by-step solution. Practice is free — no sign-up needed to start.