Blood Relations & Directions

What you'll learn

A step-by-step visual method to crack RRB NTPC family-tree and direction-sense questions in under 40 seconds each, with worked examples, symbols, shortcuts, and a common-trap warning.

This chapter has

Blood Relations & Directions — solved practice questions

8 Railways General Intelligence & Reasoning questions with step-by-step solutions. Attempt each, then reveal the answer.

1. Q1easy

   A man walks 3 km north, then 4 km east. How far is he from the starting point?

   • A5 km
   • B7 km
   • C6 km
   • D1 km
   Show answer & solution

   Correct answer: (A) 5 km

   By the Pythagoras theorem, the distance is the square root of (3 squared + 4 squared) = square root of 25 = 5 km.

2. Q2easy

   Facing north, a boy turns to his right, then turns to his right again. Which direction is he now facing?

   • AEast
   • BWest
   • CSouth
   • DNorth
   Show answer & solution

   Correct answer: (C) South

   Right from north is east, and right again from east is south.

3. Q3easy

   Facing east, a girl turns 90 degrees to her left. Which direction does she face?

   • ANorth
   • BSouth
   • CWest
   • DEast
   Show answer & solution

   Correct answer: (A) North

   Turning left from east leads to north.

4. Q4easy

   A is the father of B, and B is the father of C. How is A related to C?

   • AFather
   • BBrother
   • CGrandfather
   • DUncle
   Show answer & solution

   Correct answer: (C) Grandfather

   A is the father of C's father, so A is C's grandfather.

5. Q5medium

   Pointing to a boy, Rahul said, 'He is the son of my mother's son.' How is the boy related to Rahul?

   • ABrother
   • BNephew
   • CSon
   • DCousin
   Show answer & solution

   Correct answer: (B) Nephew

   My mother's son is my brother; his son is my nephew.

6. Q6hard

   Pointing to a man, Ravi said, 'His mother is the only daughter of my mother.' How is Ravi related to the man?

   • AFather
   • BBrother
   • CMaternal uncle
   • DCousin
   Show answer & solution

   Correct answer: (C) Maternal uncle

   The only daughter of Ravi's mother is Ravi's sister, so Ravi is the brother of the man's mother, i.e. his maternal uncle.

7. Q7medium

   A person walks 10 km north, then 10 km east, then 10 km south. Where is he with respect to the starting point?

   • A10 km east
   • B10 km west
   • C10 km north
   • DAt the start
   Show answer & solution

   Correct answer: (A) 10 km east

   The north and south movements cancel out, leaving him 10 km east of the start.

8. Q8hard

   P is the mother of Q. Q is the sister of R. R is the son of S. How is P related to S?

   • ASister
   • BWife
   • CDaughter
   • DMother
   Show answer & solution

   Correct answer: (B) Wife

   Q and R are children of both P and S, so P (their mother) is the wife of S (their father).

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