2 TIPS on cracking Reasoning Questions on Blood Relations

Looking for Questions instead of tips? - You can directly jump to  Logical Reasoning Test Questions on Blood Relations

Tip #1: Sound knowledge of blood relations

Father's father → Grandfather           Mother's father → Maternal grandfather

Father's mother → Grandmother       Mother's mother → Maternal grandmother

Father's brother → Uncle                  Mother's brother → Maternal uncle

Father's sister → Aunt                        Mother's sister → Aunt

Children of uncle → Cousin              Children of maternal uncle → Cousin

Wife of uncle → Aunt                                    Wife of maternal uncle → Maternal aunt

Children of aunt → Cousin               Husband of aunt → Uncle

Question: Pointing to a photograph of a boy Suresh said, "He is the son of the only son of my mother." How is Suresh related to that boy?

A. Brother      B. Uncle                     C. Cousin       D. Father

Solution:

Suresh’s mother’s only son is Suresh himself. So, the boy in the photo is Suresh’s son, i.e.

Suresh is the boy’s father. The answer is then D.

Question: If A + B → A is the mother of B; A - B → A is the brother B; A % B → A is the father of B and A x B → A is the sister of B, which of the following shows that P is the maternal uncle of Q?

A. Q - N + M x P            B. P + S x N – Q  C. P - M + N x Q                  D. Q - S % P

Solution:

Analyzing the options, we see,

D. Q is the brother of S, S is the father of P → Q is the uncle of P.

C. P is the brother of M, M is the mother of N, N is the sister of Q → P is the maternal uncle of Q. Thus, the answer is C.

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Tip #2: Draw flowchart when suitable

Question: P is the mother of K; K is the sister of D; D is J’s father. How is P related to J?

A. Mother      B. Grandmother                     C. Aunt                      D. Data inadequate

Solution:          

Thus, P is the mother of J’s aunt.

Or, in other words, P is the grandmother of J.

The correct option is B. (The letters beside/under the arrows indicate: m: mother, sis: sister, f: father)

Question: Given, M % N means M is the son of N, M @ N means M is the sister of N and M $ N means M is the father of N. Which of the following shows the relation that C is the granddaughter of E?

A. C % B $ F $ E                   B. B $ F $ E % C

C. C @ B % F % E                D. E % B $ F $ C

Solution:

Analyzing the options, we see,

With Option D:

E is the uncle of C

With Option C:

C is the granddaughter of E.

Hence, the correct option is C.

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