10 suspects are rounded by the police and questioned about a bank robbery. Only one of them is guilty. The suspects are made to stand in a line and each person declares that the person next to him on his right is guilty. The right most person is not questioned. Which of the following possibilities are true?
A. All suspects are lying or the leftmost suspect is innocent.
B. All suspects are lying and the leftmost suspect is innocent .
Neither A nor B
Both A and B
B only
A only

• Ans: A only
  
  If all suspects are lying then left most is guilty. becuse every one said the the person right to them is guilty.Only the left most person is not mentioned.so he might be guilty.
  
  Or if any one's statement is true then definitely the leftmost is innocent.because he is not mentioned guilty by anyone.
  
  so only one is possible at a time. they are connected with or compound statement. So A only true. In B they used and keyword. both condition cannot occur at a time . So b is not true
• 14 years agoHelpfull: Yes(47) No(1)
• A only is the answer...consider two cases as two mutually exclusive events..they can't happen together...if all persons are lying then first one must be guilty.thus both can't happen together...so A ONLY IS THE ANSWER....
• 14 years agoHelpfull: Yes(12) No(1)
• u have posted the the wrong answer....it will be
  All suspects are lying or the leftmost suspect is guilty
• 14 years agoHelpfull: Yes(5) No(0)
• A only
• 14 years agoHelpfull: Yes(4) No(0)
• A
• 14 years agoHelpfull: Yes(4) No(0)
• Neither A nor B
• 14 years agoHelpfull: Yes(2) No(14)
• if all are lying, left most is incorrect.. so these 2 conditions happens together. isn't it?
• 14 years agoHelpfull: Yes(1) No(5)