If A = {x | x is an odd integer}. B = {x | x is an even integer}, C = {2, 3, 4, 5}, and D = {14, 15, 16, 17}, what are the elements of the set A $nn$ D?

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Answer 1 · 2016-01-28T08:48:55

$A nn D = { 15, 17}$

$A nn D$ holds all the elements that are both in $A$ and in $D$ .

Formally:

$A nn D = { x | x in A ^^ x in D}$

So, basically, you need all odd integers that are also $in D$ which are $15$ and $17$ .

Thus,

$A nn D = { 15, 17}$

If A = {x | x is an odd integer}. B = {x | x is an even integer}, C = {2, 3, 4, 5}, and D = {14, 15, 16, 17}, what are the elements of the set A nnnn D?