# Boolean algebra problem

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1. Jun 2, 2016

### waver.

• members are warned that removing diagrams from homework threads is against PF rules
https://scontent-mxp1-1.xx.fbcdn.net/v/t35.0-12/13324008_10209600482268675_3779883_o.png?oh=abd4c815b9472f70cfbfbb1923a37b3c&oe=5752F454

Number 12 : I have simplified it and I have got AB but the model answer in red say A(comp(B)+c)
I just want is that answer true or not , thanks in advance

2. Jun 2, 2016

### Staff: Mentor

Why don't you check yourself? What is the output if $A \overline B$ (and choose whatever you like for C)?

3. Jun 2, 2016

### YanivW

You are right. You can easily see that every input that includes B=0 gives a 0 output, when by the answer in red (A,B,C)=(1,0,0) for example should give 1.

4. Jun 3, 2016

### Staff: Mentor

To get the textbook's answer, you need to restore a missing inverter so the upper AND gate receives $\overline B$ at its lower input.