THERE ARE 7 CONSECUTIVE NUMBERS. IF THE LARGEST NUMBER 15 99, WHAT IS THE SUM OF ALL THE GIVEN NUMBENS.​

Question

THERE ARE 7 CONSECUTIVE NUMBERS.
IF THE LARGEST NUMBER 15 99, WHAT
IS THE SUM OF ALL THE GIVEN NUMBENS.​

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Mít Mít 3 years 2021-08-31T04:20:23+00:00 2 Answers 2 views 0

Answers ( )

  1. bonexptip
    0
    2021-08-31T04:21:24+00:00
    Reply

    Answer:

    S₇ = 672

    Step-by-step explanation:

    If there are 7 consecutive numbers and the largest is 99, then there are 6 smaller consecutive numbers:

    Smallest number = 99-6 = 93

    The sequence is 93, 94, 95, 96, 97, 98, 99.

    Where:

    a₁ = 93

    an = 99

    n = 7

    Sum of the sequence:

    Sn = n/2(a₁ + an)

    S₇ = 7/2 (93 + 99)

    S₇ = 7/2 (192)

    S₇ = 7(96)

    S₇ = 672

  2. haidang
    0
    2021-08-31T04:21:39+00:00
    Reply

    Answer:
    S₇ = 672

    Step-by-step explanation:
    If there are 7 consecutive numbers and the largest is 99, then there are 6 smaller

    consecutive numbers:
    Smallest number = 99-6 = 93

    The sequence is 93, 94, 95, 96, 97, 98, 99.
    Where:

    a₁ = 93
    an = 99
    n = 7
    Sum of the sequence:

    Sn = n/2(a₁ + an)
    S₇ = 7/2 (93 + 99)
    S₇ = 7/2 (192)
    S₇ = 7(96)
    S₇ = 672

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