Maths Challenge for Students: Find Missing Number

This is the mathematical reasoning challenge for school students. In this puzzle question your challenge is to decipher the logical pattern to find the missing number that replaces the question mark in one of the squares.

Maths Challenge for Children: Find Missing Number

The answer to this "Brain Maths Question for Students", can be viewed by clicking the below button.

The answer is 21.
In each square multiply the unshaded corner digits and then subtract the remaining unshaded digit from this multiplication to get the number in the shaded part of the square.

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