Mathematical operations Q-14 ask in uttarakhand PCS CSAT, 2016#shorts

Let o+ and ox are two mathematical operators. If p o+ (p ox q) is not a tautology, then o+ and ox can be

If the mathematical operator, '+' means 'xx', 'div' means '- ','- ' means '+', and 'xx' means 'div' , then the value of 11 + 14 xx 7-5 div 29 is A. -5 B. -12 C. -7 D. -2

Let o+and ox are two mathematical operators . If po+(q oxr) is equivalent to ((p^^q)rArrr) , then o+ and ox

In the following question, by using which mathematical operators will the expression become correct? 14?2?4?6?4