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BCECE Engineering BCECE Engineering Solved Paper-2005

  • question_answer
    If a, b, care elements of a boolean algebra, then \[a.b+c(a+b)\]is equal to:

    A)  \[a.b\]                   

    B)         c

    C)                  \[a\,.\,b+c\]         

    D)         none of these

    Correct Answer: C

    Solution :

    \[a.b+c(a+b)=a.b+c.(a.b)\] \[=(a.b+c)[ab+(ab)]\] \[=(a.b+c).1\] \[=a.b+c\]


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