question_answer

The combination of gates as shown in the figure forms the

A)  AND gate         

B)  OR gale

C)  NOR gate         

D)  NOT gate

Correct Answer: B

Solution :

 We can write \[Y=\overline{\overline{A}+\overline{B}}=\overline{\overline{A}}.\overline{\overline{B}}=A.B\] Thus, given combination is equivalent to AND gate.