Subject

    গাণিতিক যুক্তি

    Topic

    সমান্তর ও গুণোওর ধারা

    How many terms are there in 20, 25, 30......... 140?

    ক)
    22
    খ)
    23
    গ)
    24
    ঘ)
    25

    Explanation

    Number of terms = {(last term - 1st term)/common difference}+1 = (140−20)/5 + 1 = (120/5) + 1 = 24 + 1 = 25.

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