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Q 1. Four-bit parallel adder is given 

the number of half adder and OR gate required to implement 4-bit parallel adder are

1.7 and 3

2.8 and 3

3. 7 and 4

4. 8 and 4

Q 2.The number of full adders and half adder required to add  16-bit number is?

(G) 8 HA, 8FH

(A) 1 HA, 15 FA

(T) 16 HA,0 FA

(E) 4 HA, 12 FA

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