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OpenStudy (anonymous):
how many three-digits even numbers can be formed using the digits 1,2,3,....,9 without repetitions? answer plzzzz
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OpenStudy (anonymous):
how many options do you have for the hundred's? The tens? the ones?
OpenStudy (anonymous):
8*7*4 = 224
OpenStudy (irishboy123):
yes , pick the trailing even digit first, ie has to be 2,4,6, or 8 then you perm 2 from 8 for the rest so \(4 * P^8_2\)
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