Question

Question 2 (Multiple Choice Worth 5 points)

[3.02] If A = {positive integers divisible by 2} and B = {integers}, what is A ∩ B?

{ }

{2, 4, 6, 8 …}

{2, 4, 6, 8, 10}

{1, 2, 3, 4, 5 …}



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Question 3 (Multiple Choice Worth 5 points)

[3.02] If C = {integers divisible by 2 from 1 to 20} and D = {integers divisible by 6 from 1 to 25}, what is C ∩ D?

{2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 24}

{6, 12, 18}

{6, 12, 18, 24}

{ }

Answer 1

Please help me with this

Answer 2

A = {positive integers divisible by 2} = {2, 4, 6, 8, ...}
B = {integers} = {..., -3, -2, -1, 0, 1, 2, 3, 4, ...}
A ∩ B means the set of numbers that are common to both A and B

So, just pick out the elements that you would find in both A and in B

Answer 3

B. {2,4,6,8....}

Answer 4

yes :)

Answer 5

Try to do the same with question 3. Write our the numbers represented by your set, like C = {2, 4, 6, 8, ..., 18, 20}. Do the same with D, an then pick out the common elements from both sets.

Answer 6

{6,12,18}

Answer 7

yes indeed :)

Answer 8

omg there are so many questions @_@

Answer 9

are there specific ones you need help with?