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Give regular expression for all strings not ending with '01' on Σ={0, 1}.

is this expression correct?

(ɛ+1*0*+(0+1)*1*0)*
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(epsilon+(1+11)*0)(0*+epsilon) i got this is it crct?
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Check this :

(0+1)$^{*}$ (00 + 10 + 11) + 1$^{*}$ + 0$^{*}$

Is this correct ?

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