document.write( "Question 162582: can someone help please\r
\n" ); document.write( "\n" ); document.write( "How many 3-digit numbers can be formed using the digits 0, 1, 2, 3, 4, 5, 6 if repetition of digits is not allowed?\r
\n" ); document.write( "\n" ); document.write( "a. 210
\n" ); document.write( "b. 5
\n" ); document.write( "c. 6
\n" ); document.write( "d. 343
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Algebra.Com's Answer #119874 by SAT Math Tutor(36)\"\" \"About 
You can put this solution on YOUR website!
You just need to use the permutations formula. You have a total of 7 digits and you are choosing 3 of these. If you have a TI calculator you can enter 7 nPr 3 or use this formula:\r
\n" ); document.write( "\n" ); document.write( "\"7%21%2F%287-3%29%21+=+210\"\r
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