mathmath333
  • mathmath333
Counting Problem
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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mathmath333
  • mathmath333
\(\large \color{black}{\begin{align} & \normalsize \text{how many different 4 digit numbers can be made } \hspace{.33em}\\~\\ & \normalsize \text{from the first 4 natural numbers (1,2,3,4) } \hspace{.33em}\\~\\ & \normalsize \text{If the repetition is allowed.} \hspace{.33em}\\~\\ & a.)\ 128 \hspace{.33em}\\~\\ & b.)\ 512 \hspace{.33em}\\~\\ & c.)\ 256 \hspace{.33em}\\~\\ & d.)\ \normalsize \text{None of these} \hspace{.33em}\\~\\ \end{align}}\)
campbell_st
  • campbell_st
well 1"d assume each digit can be used more that once so 1111 is a valid number...?
mathmath333
  • mathmath333
yes i think

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campbell_st
  • campbell_st
id that it the case then its |dw:1440461019272:dw|
campbell_st
  • campbell_st
if the problem only allows use to use a digit once its |dw:1440461093699:dw|
mathmath333
  • mathmath333
ok thanks
mathmath333
  • mathmath333
was easy

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