anonymous
  • anonymous
How many strings of eight uppercase English letters are there if no letter can be repeated?
Mathematics
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anonymous
  • anonymous
How many strings of eight uppercase English letters are there if no letter can be repeated?
Mathematics
schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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zepdrix
  • zepdrix
I'm taking Combinatorics right now, so I NEED to be able to answer a question like this by next week's test lol grrr, it's giving me some trouble though >.< thinking...
zepdrix
  • zepdrix
|dw:1442540278852:dw|Oh maybe this is simpler than I'm making it. So we have 26 options for the first letter, ya? Any uppercase letter from the English alphabet.
zepdrix
  • zepdrix
Let's say that first letter is an F. Then none of the other following 7 spaces can include an F. Meaning that for our next space we have 25 letters to choose from.|dw:1442540418212:dw|\(\large\rm 26-F=25\)

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zepdrix
  • zepdrix
So maybe the next letter is an O. So now we can't include F or O for the remaining places. \(\large\rm 26-F-O=24\)
anonymous
  • anonymous
i know the answer.

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