Find a set A (subset of R,set of real numbers) and an element a of R(adsbygoogle = window.adsbygoogle || []).push({});

such that there is no bijecton from a+A(we add a to the set A)to A.

I can't find a good example. Can someone help

Are we done if we choose the empty set? (And is the empty set a subset of R?)

Thank you

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# Need help

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