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Earn +20 ptsQ: Which subsets does the number -22 belong?
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Which subsets of real numbers does the number -22 belong?
To any set that contains it! It belongs to {-22}, or {-22, sqrt(2), pi, -3/7}, or all whole numbers between -43 and 53, or multiples of 11, or composite numbers, or integers, or rational numbers, or real numbers, etc.
To which subsets of the real number does the number -22 belong?
Real numbers; rational numbers; integers; and of course you can make up lots of other sets to which it belongs.
How do you get the number of the subsets in a set?
A finite set with N distinct elements has 2N subsets.
Can you relate the number of elements of a set to its number of subsets?
If the set has "n" elements, then you can make 2n different subsets. The number of subsets will always be greater than the size of the set, both for finite and for infinite sets.
How many proper subsets does a set with four elements have?
A set with n elements has 2n subsets. The number of proper subsets is one less, since 2n includes the set itself.
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