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When stating two things e.g. A and B , and not counting the possibility of "neither", there exists A, B and A and B. To express all of them at once, "and/or" is commonly used. What are the ways to express this in Japanese? I came up with 両方またはどちらか一方 but I feel it's a little bit unwieldy. Is there a shorter or better way to express this?

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up vote 3 down vote accepted

The standard way is to say A,Bの少なくとも一方, AとBの少なくとも一方 "at least either out of A and B".

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