Please help Find B union D.
B: {−3, −1, 3, 4, 9, 11}
D: {numbers divisible by 3 from 1 to 15}

{3, 9}

{−3, −1, 3, 4, 9, 11}

{ }

{−3, −1, 3, 4, 6, 9, 11, 12, 15}

Question

Please help Find B union D.
B: {−3, −1, 3, 4, 9, 11}
D: {numbers divisible by 3 from 1 to 15}

 {3, 9}

 {−3, −1, 3, 4, 9, 11}

 { }

 {−3, −1, 3, 4, 6, 9, 11, 12, 15}

anonymous · Answer

Let's spell out D: {3,6,9,12,15}
Now include all numbers from B and D, eliminating duplicates: 
{-3, -1, 3, 4, 9, 11, 6, 9, 12, 15}

anonymous · Answer

so 9  right? we eliminate the 9's?

anonymous · Answer

oops, only one 9, yes
{-3, -1, 3, 4, 9, 11, 6, 12, 15}

anonymous · Answer

so D would be the correct answer?

anonymous · Answer

yes

anonymous · Answer

Order does not matter in a set