IQ Questions & Answers 16-20

17. Which is the odd one out?
femur, mandible, fibula, tibia, patella
18. My watch was correct at noon, after which it started to lose 17 minutes per hour
until six hours ago it stopped completely. It now shows the time as 2.52 pm.
What time is it now?

Answers:
16. D;
17. mandible: it is the jaw bone, the rest are bones in the leg;
18. 10 pm: 12 noon = 12 noon, 1 pm = 12.43, 2 pm = 1.26, 3 pm = 2.09, 4 pm = 2.52, +6 hours = 10 pm;
19. OPTICAL ILLUSION;
20. A: each line across and down
contains five black dots and four white dots;