What is a proper subsets?

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โˆ™ 2013-06-10 12:38:12

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Proper subset definition

A proper subset of a set A is a subset of A that is not equal to A. In other words, if B is a proper subset of A, then all elements of B are in Abut A contains at least one element that is not in B.

For example, if A={1,3,5} then B={1,5} is a proper subset of A. The set C={1,3,5} is a subset of A, but it is not a proper subset of A since C=A. The set D={1,4} is not even a subset of A, since 4 is not an element of A.

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Q: What is a proper subsets?
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What is the definition of subsets and proper subsets?

meaning of proper subsets

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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The empty set has only one subset: itself. It has no proper subsets.

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The null set is a proper subset of any non-empty set.

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What is the number of proper subsets of a given finite set with n element?

2n - 1

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No. The null set cannot have a proper subset. For any other set, the null set will be a proper subset. There will also be other proper subsets.

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You cannot. They are two disjoint subsets of rational numbers.

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If you start with a set with only one element [16187191] then there can be only one proper subset: the empty set.

What are examples of a proper subset?

The set {1, 3} is a proper subset of {1, 2, 3}.The set {a, b, c, d, e} is a proper subset of the set that contains all the letters in the alphabet.All subsets of a given set are proper subsets, except for the set itself. (Every set is a subset of itself, but not a proper subset.) The empty set is a proper subset of any non-empty set.This sounds like a school question. To answer it, first make up any set you like. Then, as examples of proper subsets, make sets that contain some, but not all, of the members of your original set.

Can you form a formula that will tell how many subsets a set with union elements can have?

To find how many proper subsets there are in a set you can use the formula n^2 -n and if you would also like to find all subsets including improper the formula is n^2 -n +1

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