1 Let A 123 and B 5 42 3 Select all that are true from

1) Let A = { 1,2,3 } and B = { 5, 4,2 ,3 }.

Select all that are true from below.

a) A B = {5,3,2,4}

b) A B = { 2 , 3 }

c) B - A = { 4, 5 }

d) A - B = { 1, 3 }

2) Let A = { 1,2,3 } and B = { 4, 5, 6, 1}.

Select all that are true from below.

a) A B = { 2 , 3 }

b) B - A = { 4, 5, 6 }

c) A - B = { 2, 3 }

d) A B = {5,3,2,4}

(ignore the table)

1) Let A = { 1,2,3 } and B = { 5, 4,2 ,3 }.

Select all that are true from below.

a) A ? B = {5,3,2,4} . [False] It should be {1,2,3,4,5} [Union]

b) A ? B = { 2 , 3 } . [True] . {Intersection}

c) B - A = { 4, 5 } . [True] . {Minus}

d) A - B = { 1, 3 } . [True] . {Minus}

2) Let A = { 1,2,3 } and B = { 4, 5, 6, 1}.

Select all that are true from below.

a) A ? B = { 2 , 3 } [False] It should be {1} [Intersection]

b) B - A = { 4, 5, 6 } . [True] . {Minus}

c) A - B = { 2, 3 } . [True] . {Minus}

d) A ? B = {5,3,2,4} . [False] It should be {1,2,3,4,5,6} [Union]

Thanks, let me know if there is any concern.