Problem 2.2

(a) Write down the Boolean expression at the output Y of the 3-input NAND gate,

in terms of the inputs A, B and C.

(b) Complete the truth table below for the circuit in (a). 
A B C Y
0 0 0 1
0 0 1 1
0 1 0 1
0 1 1 1
1 0 0 1
1 0 1
1 1 0
1 1 1


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