Question

Which of the following statements is TRUE about the regular expression ${01}^{\ast }0$ ?

• A. It represents a finite set of infinite strings.
• B. It represents an infinite set of infinite strings.
• C. It represents an infinite set of finite strings.
• D. It represents a finite set of finite strings.

Answer 1

The correct option is C It represents an infinite set of finite strings.

Given regular expression is infinite set (because of *) of finite strings. A regular expression cannot generate any infinite string (since string is always finite in length by definition).