### Question 3

X NAND Y is the negation logical product of X and Y and is defined as NOT (X AND Y). What is the logical formula for X OR Y using only NAND?

a) ((X NAND Y) NAND X) NAND Y

b) (X NAND X) NAND (Y NAND Y)

c) (X NAND Y) NAND (X NAND Y)

d) X NAND (Y NAND (X NAND Y))

answer

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