- #1

ranykar

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hello I am struggled with a qustion

let B be a countable subset of uncountable set A.

Prove |A-B|=|A|

i know how to prove that A-B is uncountable

but how do i show 1:1 with A?

thanks ahead guys

let B be a countable subset of uncountable set A.

Prove |A-B|=|A|

i know how to prove that A-B is uncountable

but how do i show 1:1 with A?

thanks ahead guys

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