# Uncountable Set

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An Uncountable Set is an Infinite Set where there is no One-to-One Relation to the Natural Number Set.

**Context:**- If X is an Uncountable Set, and X is a Subset of Y, then Y is an Uncountable Set.

**Example(s):**- The Real Number Sequence.

**See:**Countable Set.

## References

- (Wikipedia, 2009) ⇒ http://en.wikipedia.org/wiki/Uncountable_set
- In mathematics, an uncountable set is an infinite set which is too big to be countable. The uncountability of a set is closely related to its cardinal number: a set is uncountable if its cardinal number is larger than that of the natural numbers.