Question

To get an output of 1. from the circuit shown in figure the input must be

• A. $a=0,b=0,c=1$
• B. $a=1,b=0,c=0$
• C. $a=1,b=0,c=1$
• D. $a=0,b=1,c=0$

Answer 1

The correct option is C $a=1,b=0,c=1$

To get final output as 1, the output of OR gate must be 1 and C must be 1.
So, a = 1, b =0 or a=0, b=1.