Question

What is the name of elements set D

Answer 1

Answer:

The set D is included in sets Q, R and C. The sets N and Z are included in the set D (because all integers are decimal numbers that have no decimal places). Any number in N or Z is also in D.

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Answer 2

Question-

What is the name of elements set D?

Answer-

The set {2, 4} is a subset of D , because every element of {2, 4} is also an element of D , so it is correct to write {2, 4} ⊆ D . But the set {2, 4} is not an element of the set D , because the four elements of the set D are all numbers ( D does not have any sets as elements), so it is incorrect to write {2, 4} ∈ D.

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