document.write( "Question 629516: A box contains 7 red balls, 5 white balls and 3 green balls. How many three balls can we select such that there are two exactly green? \n" ); document.write( "
Algebra.Com's Answer #396770 by arjay(1)\"\" \"About 
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how many 4 digits numbers can we make using the digits 3,6,7 and 8 without repetions? \n" ); document.write( "
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