Number of people having middle school education but not high school education who play only football =(x−6)2=11.
In a school of 150 students, 50 students did not play football, 90 played cricket and 20 neither played football nor cricket How many students played only football?
In a school of 150 students, 50 students did not play football, 90 played cricket and 20 neither played football nor cricket How many students played both, football and cricket?