What number should replace the question mark - www.mathselab.com

What number should logically replace the question mark?

Question


What number should logically replace the question mark?


A. 8
B. 9
C. 7
D. 4


Answer: D. 4


Solution:


Logic::

The lower right number is the sum of the other two divided by eight.

First Triangle: (39 + 17) ÷ 8 = 7

Second Triangle: (19 + 53) ÷ 8 = 9

Third Triangle : (18 + 14) ÷ 8

= 4.


Hence, The answer is 4.





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