a survey was conducted of 75 grade 11 students to determine vacation patterns. they were asked if they had ever been to hawaii, mexico or taken a cruise. nine had gone on a cruise and been to mexico , 7 had been to mexico and hawaii and 6 had been gone on a cruise and to hawaii,5 went on all 3 vacations.of the 35 who had gone to hawaii,27 had not gone to mexico or an cruise.twelve only went to mexico.a.if a students didnt go on any of these vacations,how many students only were on a cruise? b.how many students were on cruise or went to mexico