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  3. CET Karnataka Engineering

CET Karnataka Engineering CET - Karnataka Engineering Solved Paper-2001

  • question_answer
    If \[1,\omega ,{{\omega }^{2}}\]are the cube roots of unity, then their product is:

    A)  zero                     

    B) \[\omega \]

    C) \[-1\]                                    

    D)  \[1\]

    Correct Answer: D

    Solution :

    We know that \[1+\omega +{{\omega }^{2}}=0\]and \[{{\omega }^{3}}=1\] \[1\times \omega \times {{\omega }^{2}}={{\omega }^{3}}=1\]


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