document.write( "Question 1009004: A class consist of 8men & 7ladies,2students were selected randomly to represent the class in a debate. find the probability that the 2students selected are(A)Both ladies(B)Both men(C)of the same sex(D)of different sex. \n" ); document.write( "
Algebra.Com's Answer #624555 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! A class consists of 8men & 7ladies. \n" ); document.write( "2students were selected randomly to represent the class in a debate. \n" ); document.write( "Find the probability that the 2 students selected are \n" ); document.write( "(A)Both ladies:: 7C2/15C2 \n" ); document.write( "-------------------------------- \n" ); document.write( "(B)Both men:: 8C2/15C2 \n" ); document.write( "--------------------------- \n" ); document.write( "(C)of the same sex:: [7C2+8C2]/15C2 \n" ); document.write( "--------------------------------------- \n" ); document.write( "(D)of different sex. \n" ); document.write( "There are 8*7 = 56 possible different sex pairs \n" ); document.write( "---- \n" ); document.write( "P(different sex pairs) = 56/15C2 \n" ); document.write( "=========== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "-------------- \n" ); document.write( " |