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mathmath333

  • one year ago

Counting Problem

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  1. mathmath333
    • one year ago
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    \(\large \color{black}{\begin{align} & \normalsize \text{how many different 4 digit numbers can be made } \hspace{.33em}\\~\\ & \normalsize \text{from the first 4 natural numbers (1,2,3,4) } \hspace{.33em}\\~\\ & \normalsize \text{If the repetition is allowed.} \hspace{.33em}\\~\\ & a.)\ 128 \hspace{.33em}\\~\\ & b.)\ 512 \hspace{.33em}\\~\\ & c.)\ 256 \hspace{.33em}\\~\\ & d.)\ \normalsize \text{None of these} \hspace{.33em}\\~\\ \end{align}}\)

  2. campbell_st
    • one year ago
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    well 1"d assume each digit can be used more that once so 1111 is a valid number...?

  3. mathmath333
    • one year ago
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    yes i think

  4. campbell_st
    • one year ago
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    id that it the case then its |dw:1440461019272:dw|

  5. campbell_st
    • one year ago
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    if the problem only allows use to use a digit once its |dw:1440461093699:dw|

  6. mathmath333
    • one year ago
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    ok thanks

  7. mathmath333
    • one year ago
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    was easy

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