In which of the following gates, the output is 1, if and only if at least one input is 1?

In which of the following gates, the output is 1, if and only if at l

1.	In which of the following gates, the output is 1, if and only if at least one input is 1?
A.	nor
B.	and
C.	or
D.	nand
Answer» D. nand

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In which of the following gates, the output is 1, if and only if at least one input is 1?

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