Go to mobile version
13. What number should replace the question mark?
  iq test. Fast and free online iq test # 2 with answers and solutions. Question # 13. What number should replace the question mark?
 

Explanation:
In the first line: -2, -4, -8. In the second line: -3, -9, -27. In the third line: -4, -16, -64.
(94 - 4 = 90; 90 - 16 = 74; 74 - 64 = 10).