Write a grammar for the language consisting of strings that have n copies of letter 'a' followed by the same number of copies of letter 'b', where n > 0. for example, the string ab, aaabbb are in the language but abb, or bbbaa are not.

What is the most important aspect of marking media? a. data labelingb. content descriptionc. electronic labelingd. classification

If you're using an existing powerpoint presentation that will receive new slides based on a word outline, select the a. slide that will appear after the new slides. b. first slide in the presentation. c. slide that will appear before the new slides. d. last slide in the presentation.

What is the difference between the internet and the world wide web?