Subject

    রেলওয়ে

    Topic

    Bangladesh Railway -২০১৫ (ওয়েমেন)

    log10(.0001) = কত?

    ক)
    - 4
    খ)
    -3
    গ)
    1/2
    ঘ)
    1/3

    Explanation

    log 10 (.0001) = log 10 (1/10000) = log 10 (1/10 4 ) =  log 10 (10 -4 ) = -4

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