Reasoning

Family Tree (Blood Relations): Practice Questions with Answers

11 practice questions on Family Tree (Blood Relations), with answers; most also have an explanation or a worked solution. Try each one before you open its answer.

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1. Q.1

   Using the same family and clues, how is P related to S?

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   Answer: P is the father-in-law of S

   Solution:

   1. S is the son-in-law of P (established earlier) — the reverse relationship, from P’s side, makes P the father-in-law of S.

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2. Q.2

   Using the same family and clues, how is T related to S?

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   Answer: T is the daughter of S

   Solution:

   1. T is R’s sister, and S is R’s father (as Q’s husband) — so T is also S’s daughter.

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3. Q.3

   Using the same family and clues, how many of P’s grandchildren are mentioned in the information?

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   Answer: 2

   Solution:

   1. P’s only child mentioned is Q, and Q’s children are R and T — that’s 2 of P’s grandchildren mentioned.

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4. Q.4

   Using the same family and clues, how is R related to T?

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   Answer: R is the brother of T

   Solution:

   1. R is a boy, and T is stated to be R’s sister — so from R’s side, T is his sister, meaning R is her brother.

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5. Q.5

   Using the same family and clues, how is S related to P?

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   Answer: S is the son-in-law of P

   Solution:

   1. S is Q’s husband, and P is Q’s father — the husband of one’s daughter is one’s son-in-law.

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6. Q.6

   P is the father of Q. Q is the mother of R, a boy. S is the husband of Q. T is the sister of R. How is P related to R?

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   Answer: P is the maternal grandfather of R

   Solution:

   1. Tree: P (generation 1) is Q’s father. Q (generation 2) is R and T’s mother; S (generation 2) is Q’s husband, so S is R and T’s father too. R and T (generation 3) are siblings.
   2. P is Q’s father, and Q is R’s mother — so P is R’s grandfather, specifically on R’s mother’s side.

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7. Q.7

   Using the same family and clues, how is S related to T?

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   Answer: S is the father of T

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8. Q.8

   Using the same family and clues, how is Q related to P (including gender)?

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   Answer: Q is the daughter of P (Q is female, since Q is R and T’s mother)

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9. Q.9

   Using the same family and clues, how is R related to S?

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   Answer: R is the son of S

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10. Q.10

    Using the same family and clues, how is Q related to T?

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    Answer: Q is the mother of T

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11. Q.11

    Using the same family and clues, how is T related to P?

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    Answer: T is the granddaughter of P

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