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If U(x) means “x is a user” and A(x) means “x is authenticated,” then “All users...

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If U(x) means “x is a user” and A(x) means “x is authenticated,” then “All users are authenticated” is:

∃x(U(x)∧A(x))

∀x(U(x)→A(x))

100%

∃x(U(x)→A(x))

∀x(U(x)∧A(x))

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