Mathematics
Grade9
Easy

Question

Read the following conditional statement: If it is raining, then Kangana has her umbrella up.
Write the contrapositive of the statement.

  1. If Kangana does not have her umbrella up, then it is raining.
  2. If it is not raining, then Kangana does not have her umbrella up.
  3. If Kangana has her umbrella up, then it is raining.
  4. If Kangana does not have her umbrella up, then it is not raining.

hintHint:

A statement is a declarative sentence which is either true or false but it can never be both at the same time. A statement can be written in the forms of inverse, converse and contrapositive. Here, we have to write the contrapositive of the given statement.

The correct answer is: If Kangana does not have her umbrella up, then it is not raining.


    In the question the given statement is " If it is raining, then Kangana has her umbrella up."
    Here, we have to find the inverse of the given statement.
    Let us write the given statement in " if A, then B" form, where A= it is raining and B=  Kangana has her umbrella up.
    Now, the contrapositive of " if A, then B" will be " if not B, then not A".
    The contrapositive of the given statement will be " If Kangana does not have her umbrella up, then it is not raining."
    So, the contrapositive of the given statement will be " If Kangana does not have her umbrella up, then it is not raining."
    Therefore, the correct option is d, i.e., If Kangana does not have her umbrella up, then it is not raining.

    If the statement is in the form “if A, then B” here the converse of the statement will be “if B, then A” whereas in inverse the statement will be “if not A, then not B” and in contrapositive the statement will be “if not B, then not A”.

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