Question

The set S represents odd numbers to 31.
S = {1, 3, 5, 7, 9, 11, 13, 15, 17, 21, 23, 25, 27, 29, 31}

The set C represents multiples of 5 to 30.
C = {5, 10, 15, 20, 25, 30}

How many elements are in the set ?

Answer 1

Which set? C or s?

Answer 2

the set of both?

Answer 3

Yes both

Answer 4

sorry

Answer 5

3...

Answer 6

Thanks dockworker

Answer 7

yw

Answer 8

how many elements are in WHAT set?

Answer 9

both

Answer 10

lost me
you can find the number of elements in each set by counting.
what does "both" mean in this context?

Answer 11

Do you mean the elements the sets have in comnmon or the number of elements if the two sets are combined?

Answer 12

what mertsj is asking is do you want the number of elements in the intersection
\[S\cap C\] or in the union
\[S\cup C\]?

Answer 13

second choice

Answer 14

then put all the numbers into one set, throw out the duplicates and count how many numbers are left.

Answer 15

thanks

Answer 16

yw