A school has 3084 students in total. They put only 12 students in a group for sports day. How many groups are there in total?
A school awarded 42 medals in hockey , 18 in basketball and 23 in cricket. if these medals are bagged by a total of 65 students and only 4 students got medals in all the three sports; find
1) How many students received medals in exactly two of the three sports?
2) How many students received medals in exactly one of the three sports?