two good dice are rolled simultaneously. let a denote the event “ the sum shown is 8" and b the event “the two show the same number". find p(a), p(b), p(a ∩ b), and p(a ∪ b).
The sum shown is 8: 2+6=3+5=4+4=5+3=6+2
The same number: (1,1),(2,2),(3,3),(4,4),(5,5),(6,6)(1,1), (2,2), (3,3), (4,4), (5,5),(6,6)(1,1),(2,2),(3,3),(4,4),(5,5),(6,6)
a)
b)
c)
d)
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