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danielle02

Find the probability of selecting 2 people at random who were born in the same month

  • one year ago
  • one year ago

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  1. NotTim
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    within what range? there's high possibility in a group of 25 people

    • one year ago
  2. jim_thompson5910
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    The probability is 1/12. Say you choose 2 people: person A and person B If person A was born in october for example, then person B has 12 months to choose from in terms of which month s/he was born in. Only one month will match with person's A month of birth. So that's why the probability is 1/12.

    • one year ago
  3. xxfreshboy
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    He's exactly right There are 12 months in one year and randomly you chose one month so therefore the chances are 1/12. But since there are two people person A has a probability of 1/12 and person B has probability of 1/12.To find out the probability that both are both in the same month multiply the two probabilities and you get 1/144. so therefore answer is 1 out 144 chances there born in the same month! Hope I helped :D

    • one year ago
  4. jim_thompson5910
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    no, it's just 1/12, not 1/144

    • one year ago
  5. danielle02
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    thanks for the help guys

    • one year ago
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