Consider the following identities for regular expressions: (a) (r + s)* = (s + r)* (b) (r*)* = r* (c) (r* s*)* = (r + s)* Which of the above identities are true?

Mr. Dubey • 52.30K Points
Coach

Q. Consider the following identities for regular expressions: (a) (r + s)* = (s + r)* (b) (r*)* = r* (c) (r* s*)* = (r + s)* Which of the above identities are true?

(A) (a) and (b) only

(B) (b) and (c) only

(D) (a), (b) and (c)

Correct : Option (D)

Discusssion

Be the first to start discuss.

Q. Adding an intermediate component between two interacting modules in an application will improve:

Q. In Evolutionary strategy, recombination is

Q. The purpose of an N-Ary association is:

Q. Which is the safest method to choose a pivot element?

Q. _______________ is an example of application development environments.

Q. A device which converts BCD to Seven Segment is called

Q. Interoperability is

Q. Above is the circuit diagram of

Q. UTP is commonly used in __________

Q. Consider the following identities for regular expressions: (a) (r + s)* = (s + r)* (b) (r) = r* (c) (r* s) = (r + s)* Which of the above identities are true?

Discusssion

Related MCQs