Practice Problem
Practice Problem > Logical Reasoning > Missing Number

Find the missing number from the given question.
173  (24)  526
431  (18)  325
253  ( ? )  471

Solution:

Add the individual numbers on both sides of central number
    24    =    1 + 7 + 3 + 5 + 2 + 6
    18    =    4 + 3 + 1 + 3 + 2 + 5
      ?    =    2 + 5 + 3 + 4 + 7 + 1 = 22

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