document.write( "Question 1168264: In a class, all students take part in either music or drama or both. 25 students take part in music, 30 students take part in drama and 8 students take part in both music and drama. Find the number of students who take part in only music. \n" ); document.write( "
Algebra.Com's Answer #792871 by ikleyn(52799)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( " \r\n" ); document.write( "\r\n" ); document.write( "From the set \"Music\" of 25 students, subtract the subset \"both\" of 8 students.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "You will get then the subset \"the music ONLY\" consisting of 25 - 8 = 17 students.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "ANSWER. The number of students who take only music is 17.\r\n" ); document.write( "\r \n" ); document.write( "\n" ); document.write( "Solved.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Notice that the number of those who take \"drama\" is excessive in this problem and does not participate in the solution.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "--------------\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "To learn better, wider and deeper on solving similar problems, read the lesson\r \n" ); document.write( "\n" ); document.write( " - Counting elements in sub-sets of a given finite set\r \n" ); document.write( "\n" ); document.write( "in this forum.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |