4. If PQR = 1, RST = 0, and SPR = 0, which of the following must be zero
(a) P
(b) Q
(c) R
(d) S

• s is common between rst and spr s=0
• 9 years agoHelpfull: Yes(1) No(0)
• ans:p RST=0 AND SPR=0 SO P AND T=0
• 9 years agoHelpfull: Yes(0) No(0)
• From the given data :-
  PQR=1
  》》》》》》 P=1 , Q=1 , R=1
  RST=0
  》》 R=1 , S=0 , T=1
  SPR =0
  》》 S=0, P=1, R=1
  Therefore from the above set of given data
  We get S=0.
  
• 9 years agoHelpfull: Yes(0) No(0)