SOLUTION: I am having hard to helping my daughter with this can you please help thank you suppose C is subset of D and D is a subset of C. a) If n(c)=5, find n(D) b) what other relation

Question 185481: I am having hard to helping my daughter with this can you please help thank you
suppose C is subset of D and D is a subset of C.
a) If n(c)=5, find n(D)
b) what other relationship exists between sets C and D?

Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Remember, if C is subset of D and D is a subset of C, then sets C and D are the same sets (draw a picture if you're unsure). In notation form, this looks like:

If

and

, then

a) So n(C)=5 also tells us that n(D)=5 (ie the number of elements in sets C and D is 5) since C=D

b) The other relation ship is that C=D
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