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26 May, 11:12

Kyle has 3 cards 6, 1, 2, what is all the numbers he can make using these cards, including one, two and three digit numbers

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  1. 26 May, 11:16
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    Answer: he can make 21 different numbers.

    Step-by-step explanation:

    If he uses only one card, the numbers are:

    1, 2 and 6, so here we have 3 combinations.

    If he uses two cards, for the first digit he has 3 options (because he has 3 cards) and for the second digit he has two options (because he already selected one of the cards) then he has:

    3*2 = 6 different options

    If uses the 3 cards, then he has 3 options for the first card, 2 options for the second card and one option for the third card, then the number of combinations is:

    c = 3*2*1 = 6 combinations.

    Adding all together we have C = 3 + 6 + 6 = 21 combinations.
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