Mensa IQ Test Mensa IQ Blood Relations and Direction Sense 5

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?

Accepted Answer

Paternal grandmother

Answer

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?

Accepted Answer

North

Answer

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?

Accepted Answer

Granddaughter

Answer

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?

Accepted Answer

40 km east

Answer

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?

Accepted Answer

Grandnephew

Answer

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.

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Mensa IQ Test Mensa IQ Blood Relations and Direction Sense 5