document.write( "Question 887227: How many four digit numbers greater than 6800 can be formed using the digits 3,5,6,7,8 where repetition of digits is allowed?
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Algebra.Com's Answer #536472 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! How many four digit numbers greater than 6800 can be formed using the digits 3,5,6,7,8 where repetition of digits is allowed? \n" ); document.write( "------ \n" ); document.write( "If thousands digit is 8 you get 1*5^3= 125 numbers \n" ); document.write( "If thousands digit is 7 you get 1*5^3 = 125 numbers \n" ); document.write( "If thousands digit is 6 the hundreds digit is 8 you get 1*1*5^2 = 25 numbers \n" ); document.write( "------ \n" ); document.write( "Ans: 2*125 + 25 = 275 numbers \n" ); document.write( "---------- \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "-------------- \n" ); document.write( " |