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**aftermath****Member**- Registered: 2012-12-28
- Posts: 6

hi , how to prove that the union of countable set and uncountable set is uncountable ? thanks

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**scientia****Member**- Registered: 2009-11-13
- Posts: 224

Hint: Any set containing an uncountable subset is uncountable.

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**aftermath****Member**- Registered: 2012-12-28
- Posts: 6

thank you scientia

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**mathaholic****Member**- From: Earth
- Registered: 2012-11-29
- Posts: 3,251

Welcome to the forum, aftermath.

Mathaholic | 10th most active poster | Maker of the 350,000th post | Person | rrr's classmate

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**aftermath****Member**- Registered: 2012-12-28
- Posts: 6

thanks julian i think this forum can help me a lot . GODbless !

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