The sentence,"What is your name?" is

Write the negation of the following statement:
Every natural number is an integer.

Which of the following sentences are statements? Give reasons for your answer.
Mathematics is difficult.

The negation of $p \rightarrow (\sim p \vee q)$ is

Write the contrapositive and converse of the following statement:
'Something is cold implies that it has low temperature.'

Rewrite the following statement using "if-then" in five different ways conveying the same meaning:
"If a natural number is odd,then its square is also odd."