whats 1+1+2+2+3+3+4+4+5+5+6+6+7+7+8+8+9+9

Question

whats 1+1+2+2+3+3+4+4+5+5+6+6+7+7+8+8+9+9

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Trung Dũng 3 years 2021-08-06T04:19:56+00:00 2 Answers 6 views 0

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  1. thienthanh
    0
    2021-08-06T04:21:17+00:00
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    Answer:

    90 is your answer

    Step-by-step explanation:

    first I just added all similar numbers together, then I added the answers of all the similar numbers together one-by-one, finally we find our answer, 90

  2. thnahdat
    0
    2021-08-06T04:21:18+00:00
    Reply

    Answer:

    Its 90

    Step-by-step explanation:

    I used a calc…..

    1 + 1 + 2 + 2 + 3 + 3 + 4 + 4 + 5 + 5 + 6 + 6 + 7 + 7 + 8 + 8 + 9 + 9= 90

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