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Maths Puzzle – 4, 4, ?

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March 11, 2020 by Govind Prajapati Leave a Comment

Which number should replace the question mark?

Check your answer:-

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Answer With ExplanationHide
This is following this pattern

A*B – (B-A) – 1
for first line 4*6 – (6-4) -1 => 24 – 2 -1 => 21
you can see the same for all other lines, thus for the last one

4*4 – (4-4) – 1 => 15

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