document.write( "Question 366812: 1)In how many ways can 12 students be divided into three groups of 4,if the order of the groups and the arrangement of the students in a group are immaterial ? \r
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Algebra.Com's Answer #261561 by sudhanshu_kmr(1152)![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "no. of group = 3\r \n" ); document.write( "\n" ); document.write( "no. of ways = [ 12C4 * 8C4 * 4C4 ]/ 3! \r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " = [ 495 * 70 * 1] / 6\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " = 5775\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "here, divided by 3!, because here order of these 3 group does not matter. \n" ); document.write( " |