Which combination of gates does not allow the implementation of an arbitrary boolean function?

or gates and exclusive or gate only

Which combination of gates does not allow the implementation of an ar

1.	Which combination of gates does not allow the implementation of an arbitrary boolean function?
A.	or gates and and gates only
B.	or gates and exclusive or gate only
C.	or gates and not gates only
D.	nand gates only
Answer» B. or gates and exclusive or gate only

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Which combination of gates does not allow the implementation of an arbitrary boolean function?

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