document.write( "Question 393532: Suppose 5 different integers are randomly chosen from between 20 and 69, inclusive. What is the probability that they each have a different tens digit? \n" ); document.write( "
Algebra.Com's Answer #279277 by edjones(8007)![]() ![]() You can put this solution on YOUR website! There are 5 different sets of tens digits, 2,3,4,5,6 and there are 10 of each of them. \n" ); document.write( "I will assume that they are chosen without replacement. \n" ); document.write( "nCr=combination of n things taken r at a time. \n" ); document.write( "(10C1*10C1*10C1*10C1*10C1)/50C5 \n" ); document.write( "=100000/2118760 \n" ); document.write( "=.0472 \n" ); document.write( ". \n" ); document.write( "Ed \n" ); document.write( " |