Ask your own question, for FREE!
Mathematics 21 Online
OpenStudy (anonymous):

A = {integers divisible by 2} and B = {integers}, what is A ∩ B? {...−3, −2, −1, 0, 1, 2, 3 ...} { } {0} {... −6, −4, −2, 0, 2, 4, 6 ...}

OpenStudy (anonymous):

A= 2,4,6,8,10 and etc. Right?

ganeshie8 (ganeshie8):

\(\large A \cap B\) is the set with elements common to both sets\(\large A\) and \(\large B\)

ganeshie8 (ganeshie8):

also include negative numbers and 0 : A = {...,-10,-8,-6,-4,-2,0, 2,4,6,8,10,...}

OpenStudy (anonymous):

Ohhh ok

ganeshie8 (ganeshie8):

B is all integers : B = {...,-10,-9,-8,-7,-6,-5,-4,-3,-2,-1,0,1,2,3,4,5,6,7,8,9,10,...}

ganeshie8 (ganeshie8):

what elements are common to both the sets ?

ganeshie8 (ganeshie8):

in other words what elements exist in both set A and set B ?

OpenStudy (anonymous):

-10,-8,-6,-4,0,2,4,6,8,10

ganeshie8 (ganeshie8):

Perfect ! but you need to include ALL even integers since both the given sets have infinite elements

ganeshie8 (ganeshie8):

\[\large A\cap B = \{\text{all even integers}\}\]

OpenStudy (anonymous):

OK so my answer would be?

OpenStudy (anonymous):

The last one?

ganeshie8 (ganeshie8):

look at the options, which option has all even integers ?

ganeshie8 (ganeshie8):

Yup!

ganeshie8 (ganeshie8):

... in the end means the list continues forever to infinity

ganeshie8 (ganeshie8):

... in the start means the list continues forever to -infinity to left

ganeshie8 (ganeshie8):

so last option represents ALL the even integers

OpenStudy (anonymous):

Thaanks

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!