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How Many Subsets Are There in a Set With $r$ Elements?
A)

Question 167

Multiple Choice

How many subsets are there in a set with $r$ elements?

A) $2 r$
B) $How many subsets are there in a set with r elements? A) 2 r B) C) 3 ^ { r } D) 2 ^ { r } E) r$
C) $3 ^ { r }$
D) $2 ^ { r }$
E) $r$

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