Question Bank - Logical Reasoning

Here's the question bank on all the logical reasoning topics.

Find the number that is missing in the third circle.

A.
19
B.
36
C.
21
D.
57

Solution:

The logic followed here is:1) We taking a square root of all outside digit.2) Then addition of all number.3) We get a middle number.Pattern follow in first figure? ?36 + ?64 + ?25 + ?49? 6 + 8 + 5 + 7? 26 In second figure ? ?25 + ?144 + ?36 + ?64? 5 + 12 + 6 + 8? 31Similarly,In third figure? ?9 + ?25 + ?16 + ?81? 3 + 5 + 4 + 9? 21Hence, the correct answer is "21".

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