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20 July, 01:43

the sum The first six terms of a geometric series is 15,624 and the common ratio is 5 what is the first term of the series

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  1. 20 July, 01:52
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    Step-by-step explanation:

    The sum of the first n terms of a geometric series is:

    S = a₁ (1 - r^n) / (1 - r)

    Given n = 6, S = 15624, and r = 5:

    15624 = a₁ (1 - 5^6) / (1 - 5)

    a₁ = 4
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