Which relationships are true?

Question

Which relationships are true? Hint: the List of symbols from your assigned reading will help.
a) Q ⊆ Z
b) Q ∪ Z = Q
c) Z^+ U Q =Z

Answer 1

If you followed Parviz's advice, you might find...

 

Q is all fractions

Z is all integers

U is the universal set of all values

 

⊆ means "is a subset of"
∪ means "union" ("OR" statement)

^ could mean "intersect" ("AND") although, it is usually rounded in shape if ∪ is round

So, I'm not sure what that last one means.

 

Integers do count as fractions.

 

Answer 2

Look up your assigned reading.