Vinod Singh and Shweta Pawar Solutions for Chapter: Mathematical Logic, Exercise 2: Critical Thinking

The negation of the statement, $\exists x\in R$, such that $x^2+3>0$, is 

The negation of the statement "If Saral Mart does not reduce the prices, I will not shop there any more" is

The switching circuit for the statement $\left[p\wedge (q\vee r)\right]\vee (~p\vee s)$ is 

If the symbolic form is $(p\wedge r)\vee (~q\wedge ~r)\vee (~p\wedge ~r)$, then switching circuit is

The switching circuit for the symbolic form $(p\vee q)\wedge \left[~p\vee (r\wedge ~q)\right]$ is

The symbolic form of logic for the following circuit is 

The simplified circuit for the following circuit is 

The simplified circuit for the following circuit is