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Question:

The contrapositive of the following statement, "If the side of a square doubles, then its area increases four times" is:

If the area of a square increases four times, then its side is not doubled

If the side of a square is not doubled, then its area does not increase four times

If the area of a square does not increase four times, then its side is not doubled

If the area of a square increases four times, then its side is doubled

Solution:

The correct option is C If the area of a square does not increase four times, then its side is not doubled. Contrapositive of p→q is given by ¬q→¬p. So, (3) is the right option.