Certificates / Logical reasoning / Blood Relations

Blood Relations: lesson, then the certificate test

Step 1: the lesson (about 1 min)

Draw the family tree as you read: one level per generation.

  • Mark males and females (+ and −) only when the question says so.
  • Siblings on the same level, parents one level up, children one level down.
  • Answer from the person asked ABOUT to the person named second.

Worked example

A is B's brother. C is A's mother. D is C's father. How is D related to B?

  • A and B are siblings, so C is B's mother too
  • D is C's father, so D is the father of B's mother

Answer: D is B's maternal grandfather.

Watch out

  • Guessing someone's gender from a name: use only what the question states.

Made by Shishya (AI-assisted): a general method in our own words, with our own example; no exam or platform question is copied.

Practise Blood Relations first

Step 2: the test