anonymous
  • anonymous
Could anyone please help me with this problem? Assume that 4 digits are selected at random from the set {1,3,7,8,9} and are arranged in random order. What is the probability that the resulting 4-digit number is less than 8000?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
the question states "what is the probability"
anonymous
  • anonymous
ok sorry i did not see it
anonymous
  • anonymous
I can help you!

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anonymous
  • anonymous
We have a four-digit number, and we want it to be less than 8000. One way to find the probability would be to look at every possible 4-digit number which uses the correct combination of digits, but there's a shorter way to do things.
anonymous
  • anonymous
If we want the number to be below 8000, what can you tell me about the first digit?
anonymous
  • anonymous
The first digit has to be 1,3,or 7.
amistre64
  • amistre64
how many number can we make in total?
amistre64
  • amistre64
can we assume the digits can be repeated, like: 1111?
anonymous
  • anonymous
There is no repetition

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