vC 5V Key A U1 NOT U2 NOT U3 NOT U4 Y1 U7 Y AND3 OR3 Y2 AND

vC 5V.. Key = A U1 NOT U2 NOT U3 NOT .U4 Y1 U7 Y. AND3 OR3 Y2 AND3:. U6 Y3 .AND3

Solution

1) Ans--c

Y=ABC+AB\'C\'+A\'B\'C

There are 3 AND gates in the circuit ,each and gate produce 1 product

1st AND gate from top gives ABC as its 3 inputs are connected to A,B and C

2nd AND gate from top gives AB\'C\' as its 3 inputs are connected to A,B\' and C\'

3rd AND gate from top gives A\'B\'C as its 3 inputs are connected to A\',B\' and C

All the 3 AND gate ouputs are given to OR gate which produces their sum