Which of the following is not a regular expression?(a) [(a+b)*-(aa+bb)]*(b) [(0+1)-(0b+a1)*(a+b)]*(c) (01+11+10)*(d) (1+2+0)*(1+2)*

Which of the following is not a regular expression?(a) [(a+b)*-(aa+bb)

1.	Which of the following is not a regular expression?(a) [(a+b)-(aa+bb)](b) [(0+1)-(0b+a1)(a+b)](c) (01+11+10)(d) (1+2+0)(1+2)*
Answer» The correct choice is (b) [(0+1)-(0b+a1)(a+b)] Best explanation: Except [(0+1)-(0b+a1)(a+b)] all are regular expression.

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Which of the following is not a regular expression?(a) [(a+b)*-(aa+bb)]*(b) [(0+1)-(0b+a1)*(a+b)]*(c) (01+11+10)*(d) (1+2+0)*(1+2)*

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Which of the following is not a regular expression?(a) [(a+b)-(aa+bb)](b) [(0+1)-(0b+a1)(a+b)](c) (01+11+10)(d) (1+2+0)(1+2)*