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25. What figure should replace the question mark?
  IQ test. Free iq test online # 2 with answers and solutions. Question # 25. What figure should replace the question mark?
 

Explanation:
7 + 15 + 8 = 30; 3 + 16 + 11 = 30; 4 + 18 + 8 = 30; 12 + 9 + 9 = 30.