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sequence problem

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by ch0719 » Tue Dec 09, 2008 6:55 pm
OA is C
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by cramya » Tue Dec 09, 2008 7:00 pm
8 ways to choose first letter
7 ways to choose 2nd letter
6 ways to choose third letter

8*7*6 = 336 total

36 not assigned

336-36 = 300

So there were 300 participants since each one was assigned a unique code.
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by ch0719 » Tue Dec 09, 2008 8:04 pm
thanks! :D
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