Diketahui A ={ 1 2 3 4} {3 4 5} dan C ={2357} Tentukan( a . a n b )(b. a n c) (c. a n c )( d. a u b) ( e. a u c)

a.a n b = {3,4}
b.a n c = {2,3}
c.a n c = {2,3}
d.a u b = {1,2,3,4,5}
e.a u c = {1,2,3,4,5,7}
maaf kalau jawabannya salah