Thread: Elements

1. Let U: = {1,2,3,4,5,6,7,8,9} be the universal set. Let A:= {1,4,5}, B:= {4,5,7}, C: {3,5,8,9}.

a) list the elements of A^c
b) list the elements of A – B -> answer A{1,4,5} - B{4,5,7} = {1,7}
c) list the elements of B U C -> answer B{4,5,7} U C{3,5,8,9} = {3,4,7,8,9}
d) list the elements of A^c ∩ B^c
e) list the elements of A ∩ B ∩ C. -> answer A{1,4,5} ∩ B {4,5,7} ∩ C {3,5,8,9} = {1,3,7,8,9}

Originally Posted by Tazsweet19

1. Let U: = {1,2,3,4,5,6,7,8,9} be the universal set. Let A:= {1,4,5}, B:= {4,5,7}, C: {3,5,8,9}.

a) list the elements of A^c
b) list the elements of A – B -> answer A{1,4,5} - B{4,5,7} = {1,7}
c) list the elements of B U C -> answer B{4,5,7} U C{3,5,8,9} = {3,4,7,8,9}
d) list the elements of A^c ∩ B^c
e) list the elements of A ∩ B ∩ C. -> answer A{1,4,5} ∩ B {4,5,7} ∩ C {3,5,8,9} = {1,3,7,8,9}


2) Use the binomial theorem to prove that . b) write out the expansion 7x + 10y =1.

Sorry, but can you tell us the point of your posting?

huh.. my teacher gave me question. I want to know.. I put answer if I am right or wrong? I need study for final exam.