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7 August, 22:14

How many different numbers can you make out of 1,2,3 and they can't have two of the same numbers in 1 problem (can't be decimals) I think it 15?

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  1. 8 August, 00:36
    0
    There are 3 different numbers

    slot method

    how many 3 digit numbers?

    321

    312

    123

    132

    213

    231

    6 numbes

    how many 2 digit numbers?

    12

    21

    13

    31

    23

    32

    6 numbers

    how many 1 digit numbers

    1

    2

    3

    3 of them

    6+6+3=15

    15 different number, yah you ar right
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