Negations

Write the negation of each statement:

1. The sun rises from the east.
2. $1+1=0$
3. January is the first month of the year.
4. The Eiffel Tower is in Japan.
5. A square has 7 sides.

Write the negation of each statement, and determine the truth value:

1. A snake is a reptile.
2. The measure of an acute angle is greater than 90°.
3. $5+5+5=555$
4. $\frac{5}{6}$ is a fraction.

$p$: A pentagon has 5 sides
$q$: United States is a city
$r$: Chairs have four legs

Write a complete sentence in words to show what the symbols means, and find the truth value:

Determine the truth value of the statement. Negate it twice, write it in a complete sentence, and determine the new truth value:

1. A quarter of an hour is 15 minutes
2. There is caffeine in coffee.
3. The ocean has salt water.