Mensa IQ Test Mensa IQ Blood Relations and Direction Sense 5 — Questions and Answers
Question 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?
- Paternal grandmother (Correct answer)
- Maternal grandmother
- Great-grandmother
- Aunt
Correct 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.
Question 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?
- North (Correct answer)
- East
- West
- South
Correct 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.
Question 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?
- Granddaughter (Correct answer)
- Daughter
- Niece
- Great-granddaughter
Correct 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.
Question 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?
- 40 km east (Correct answer)
- 50 km northeast
- 30 km east
- 70 km northeast
Correct 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.
Question 5: P is Q's only daughter. R is P's son. S is Q's brother. How is R related to S?
- Grandnephew (Correct answer)
- Nephew
- Son
- Cousin
Correct 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.
Question 6: A person is standing at the center of a field facing north. They rotate 270° clockwise. What direction do they now face?
- East
- South
- West (Correct answer)
- North
Correct 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.
Question 7: A says: 'B's father is the only son of C.' C is A's father. How is B related to A?
- Niece or Nephew (Correct answer)
- Son or Daughter
- Sibling
- Cousin
Correct 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.
Mensa IQ Test Mensa IQ Blood Relations and Direction Sense 5
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?