IXL - Conditionals (Geometry practice)

Is the following conditional true?

If an integer is divisible by 5, then its last digit is 5.

yes

ref_doc_title.

Learn with an example

question

Is the following conditional true?

then

≤

yes

key idea

A conditional statement can be written as If

then

A is the hypothesis and B is the conclusion.

A counterexample is an example in which the hypothesis is true, but the conclusion is false. If you can find a counterexample to a conditional statement, then that conditional statement is false. If there is no counterexample, then the conditional is true.

solution

Look at the given conditional:

then

≤

The conditional is false because you can find a counterexample. For example,

is a counterexample because it makes the hypothesis true

(

)

and the conclusion false

(

≤

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A.2Counterexamples

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