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10th Class Mathematics Sample Paper Maths Olympiad Model Test Paper-8

  • question_answer
    If \[{{a}^{2}}+4{{b}^{2}}=12ab,\] then \[\log \,(a+2b)\] is

    A)  \[\frac{1}{2}\,\,[\log a+\log b-\log 2]\]

    B)  \[\log \,\,\frac{a}{2}+\log \,\,\frac{b}{2}+\log 2\]

    C)  \[\frac{1}{2}\,\,[\log a+\log b+4\log 2]\]

    D)  \[\frac{1}{2}\,\,[\log a-\log b+4\log 2]\]

    E)  None of these

    Correct Answer: C

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