document.write( "Question 1161210: In a certain Algebra 2 class of 21 students, 7 of them play basketball and 8 of them play baseball. There are 11 students who play neither sport.What is the probability that a student chosen randomly from class plays both basketball and baseball? \n" ); document.write( "
Algebra.Com's Answer #784709 by ikleyn(52864) You can put this solution on YOUR website! . \n" ); document.write( " \r\n" ); document.write( "\r\n" ); document.write( "The number of those who plays at least one sport is 21 - 11 = 10.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "Therefore, the number of those who plays both sports is 7 + 8 - 10 = 5.\r\n" ); document.write( "\r\n" ); document.write( "\r\n" ); document.write( "The probability under the problem's question is P =\r \n" ); document.write( "\n" ); document.write( "Solved.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "----------------\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "To understand the solution in FULL, read and learn from 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 site.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "/\/\/\/\/\/\/\/\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "If you want communicate with me (and have a two-ways communication), always refer in your comment/message \n" ); document.write( "to the problem's ID number.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "For this problem, its ID number is 1161210.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Find it in your file, in the VERY FIRST upper line.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Then you will obtain my response in the same post/spot.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "If you do not refer to the problem's ID, I will not know to whom to answer.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "It is how this forum works.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |