Subject

    Quantitative Aptitude

    Topic

    Average

    Find the average of all whole number 1 and 100 that end in 3?

    ক)
    48
    খ)
    45
    গ)
    46
    ঘ)
    47

    Explanation

    (3 + 13 + 23 + 33 + 43 + 53 + 63  +73 + 83 + 93 )/10 Sum= n/2(2a +(n-1)d) = 10/2  (6 + 9X10) = 480 Avg = 48

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