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Home/ Questions/Q 6606667
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Editorial Team
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Editorial Team
Asked: May 25, 20262026-05-25T19:25:13+00:00 2026-05-25T19:25:13+00:00

Assuming you have a a set E = {a,b}, and you have a superset

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Assuming you have a a set E = {a,b}, and you have a superset E* consisting of all possible combinations of a, and b in E. How do you construct an expression for a String that has number of a’s divisible by 3?

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  1. Editorial Team
    Editorial Team
    2026-05-25T19:25:14+00:00Added an answer on May 25, 2026 at 7:25 pm

    Try

    /^(b*ab*ab*ab*)+$/
    

    Examples:

    abbb => N
    bbb => N
    aaab => Y
    ababbbba => Y
    aaabba => N
    bbbaaaabbbabbbba => Y
     => N
    
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