| | Lesson 2, Problem 1 |  |
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| Author | Message |
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Dojo
Admin
Number of posts : 154
Location : Probably somewhere near a computer
Registration date : 2008-08-12
| | Subject: Lesson 2, Problem 1 Tue Aug 19, 2008 11:06 pm | |
| How many ways are there to arrange the letters in the word:
a) HI
b) CAT
c) BLAH
d) MATCH | |
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herefishyfishy1
Developer
Number of posts : 36
Age : 29
Location : An insignificant little blue-green planet 93 million miles from the sun Sol.
Registration date : 2008-08-16
| | Subject: Re: Lesson 2, Problem 1 Wed Aug 20, 2008 7:48 am | |
| The answers are
2 (2!: 2 choices for the first letter, one for the second letter)
6 (3!: 3 choices for the first letter, 2 for the second letter, 1 for the last letter)
24 (4!: 4 choices for the first letter, 3 for the second letter, 2 for the third letter, 1 for the last letter)
120 (5!: I'm too lazy to type this out) | |
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ternary0210
School Math Nerd
Number of posts : 41
Age : 26
Registration date : 2008-08-17
| | Subject: Re: Lesson 2, Problem 1 Wed Aug 20, 2008 12:54 pm | |
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AIME15
Hardcore TMF user
Number of posts : 163
Age : 27
Location : Pleasanton, CA
Registration date : 2008-08-13
| | Subject: Re: Lesson 2, Problem 1 Wed Aug 20, 2008 1:25 pm | |
| Extension: How many ways to arrange the letters in"
a) HELLO
b)JOHNNYBEARD
c)SIXTEEN
d)BANANA | |
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herefishyfishy1
Developer
Number of posts : 36
Age : 29
Location : An insignificant little blue-green planet 93 million miles from the sun Sol.
Registration date : 2008-08-16
| | Subject: Re: Lesson 2, Problem 1 Wed Aug 20, 2008 1:50 pm | |
| 60
3*4*5*6*7*8*9*10*11. I'm too lazy to calculate.
2520
60 | |
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AIME15
Hardcore TMF user
Number of posts : 163
Age : 27
Location : Pleasanton, CA
Registration date : 2008-08-13
| | Subject: Re: Lesson 2, Problem 1 Wed Aug 20, 2008 1:51 pm | |
| Can you explain your answer? | |
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Dojo
Admin
Number of posts : 154
Location : Probably somewhere near a computer
Registration date : 2008-08-12
| | Subject: Re: Lesson 2, Problem 1 Wed Aug 20, 2008 9:35 pm | |
| Please dont do overcounting yet. | |
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AIME15
Hardcore TMF user
Number of posts : 163
Age : 27
Location : Pleasanton, CA
Registration date : 2008-08-13
| | Subject: Re: Lesson 2, Problem 1 Thu Aug 21, 2008 12:07 am | |
| Whoops, sorry. This is why you need a list of topics  | |
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isabella2296
Admin
Number of posts : 45
Location : You'd really like to know, wouldn't you?
Registration date : 2008-08-16
| | Subject: Re: Lesson 2, Problem 1 Thu Aug 21, 2008 1:03 pm | |
| Dojo, maybe you should compile a table of contents or something.If you need help, ask. | |
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| | Subject: Re: Lesson 2, Problem 1 | |
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| | Lesson 2, Problem 1 | |
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