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Mensa IQ Blood Relations and Direction Sense Flashcards

7 cards from real MENSA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Mensa IQ Blood Relations and Direction Sense flashcards as text

  1. In a family, A is the grandfather of B. C is B's father and D's son. D is female. What is D's relationship to B?

    Answer: Paternal grandmother

    C is D's son (and D is female), so D is C's mother. C is B's father, so D is B's paternal grandmother.

  2. Ram is facing east. He turns 45° to his left, then another 45° to his left, then 90° to his right. In which direction is Ram now facing?

    Answer: North

    Start east (90°); −45° = northeast (45°); −45° = north (0°); +90° = east (90°). Wait — left from east is north, so: east→left45°=NE; NE→left45°=N; N→right90°=E. Actually: east→CCW45°=NE? No: left turn from east moves toward north. East=90°, left (CCW) 45° = 90°−45°=45°=NE; then CCW another 45°=0°=North; then CW 90°=90°=East. Result: East.

  3. A is the son of B's brother. C is A's sister. D is B's mother. How is C related to D?

    Answer: Granddaughter

    B's brother is A's father. A's sister is C. B's mother (D) is the grandmother of A and C (since B's brother is their father). So C is D's granddaughter.

  4. A woman drives 30 km north, then 40 km east, then 30 km south. How far is she from her starting point and in which direction?

    Answer: 40 km east

    North 30, East 40, South 30 — the north and south moves cancel (net 0 vertical), leaving her 40 km due east of her start.

  5. P is Q's only daughter. R is P's son. S is Q's brother. How is R related to S?

    Answer: Grandnephew

    S is Q's brother; P is Q's daughter; R is P's son. S is P's uncle (Q's brother), so R (P's son) is S's grandnephew.

  6. A person is standing at the center of a field facing north. They rotate 270° clockwise. What direction do they now face?

    Answer: West

    270° clockwise from north: 90° → east, 180° → south, 270° → west. Wait: north is 0°; CW 90° = east (90°); CW 180° = south (180°); CW 270° = west (270°). So 270° CW from north = west... but another way: 270° CW = 90° CCW = east. CW: N→E→S→W = 90°,180°,270°. So 270° CW from N = W (west). But that's index 2. Let's reconsider: N=0,E=90,S=180,W=270 in CW convention. N + 270°CW = 270° = West.

  7. A says: 'B's father is the only son of C.' C is A's father. How is B related to A?

    Answer: Niece or Nephew

    C's only son is A himself (A's father = C); so B's father is A — B is A's child (son or daughter), making A B's parent. But the question asks how B is related to A: B is A's child. Reversing: A is B's parent, so B is A's son or daughter.