Write the negation of each of the following statements.

a. Some Web sites feature audio.

b. Every Web site has both audio and video.

c. Every Web site has either audio or video.

d. Some Web sites have neither audio nor video.

e. Every Web site either has text or else has both audio and video.

30. Write the negation of each of the following statements.

a. Only students eat pizza.

b. Every student eats pizza

c. Some students eat only pizza.