The sample space will be: {1, 2, 3, 4, 5, 6}
Event A is: {Rolling 1,2 or 3}
Complement of event A will contain all those outcomes in the sample space which are not a part of event A.
So, complement of event A will be: {Rolling a 4,5 or 6}
Thus option A gives the correct answer
452÷8= 56.5
56 remainder 5
48,x and x all lie on a straight line sooo 180-48=2x
132=2x
132/2=x
66=x
X=66