Let r = 1(1 + 0)*, s = 11*0 and t = 1*0 be three regular expressions. Which…
GATE · 1991 · CS · Question 3 subparts
Let r = 1(1 + 0)*, s = 11*0 and t = 1*0 be three regular expressions. Which one of the following is true?
- A.
L(s) ⊆ L(r) and L(s) ⊆ L(t)
- B.
L(r) ⊆ L(s) and L(s) ⊆ L(t)
- C.
L(s) ⊆ L(t) and L(s) ⊆ L(r)
- D.
L(t) ⊆ L(s) and L(s) ⊆ L(r)
- E.
None of the above
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