Theory of computation

Question

Write a regular expression for the string having 3

 consequetive 1s

Comments

how many consecutive ones??/

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Incomplete question. How many consecutive ones you want?

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i request to write question completely what are its input symbols if u r asking dout also na ask clearly 3 consicutive 1s if i want to ans i can wirte it as 111  (111)*

if i consider 1,2 as input symbols

(1+2)*111(1+2)* as i increse aand put more and more conditions the answe changes so be specific with u r question

Answer 1

(0+1)*111(0+1)*

Answer 2

Regular expression for 3 consecutive 1's will be

(0+1)^*111(0+1)^*

Answer 3

you have not mentioned the input symbols but instead of that

i assumed it {0,1}

re= ((0+1)* 111(0+1)*)+