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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