The number of two-input NAND gates required to produce the two-input O

1.	The number of two-input NAND gates required to produce the two-input OR function is
A.	1
B.	2
C.	3
D.	4
E.	None of the above
Answer» D. 4

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The number of two-input NAND gates required to produce the two-input OR function is

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