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22 March, 11:00

8 15 27 blank 20 find the blank number

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  1. 22 March, 12:55
    0
    the blank number is 23

    Step-by-step explanation:

    8, 15, 27, x, 20

    common ratio, r = T2: T1 = T3: T2

    = 15 : 8 = 27: 15

    = 1.8 = 1.8

    20 : x = x : 27

    (cross multiply,)

    x² = 540

    x = √540

    x = 23.24

    x = 23
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