Find the missing number

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Find the missing number?

A. 6

B. 1

C. 8

D. 5

Answer: Option A

Solution (By Examveda Team)

Numbers in boxes from the second row up equal the average of the 2 numbers in the boxes directly below. Continue to the apex of the triangle. Thus,

Missing Number = Average of 7 and 5.
Missing number = (7 + 5)/2 = 6.

This Question Belongs to Competitive Reasoning >> Missing Number Finding