Logical Reasoning - Logical Problems - Discussion

Each problem consists of three statements. Based on the first two statements, the third statement may be true, false, or uncertain.

3. 

Joe is younger than Kathy.
Mark was born after Joe.
Kathy is older than Mark.
If the first two statements are true, the third statement is

[A]. true
[B]. false
[C]. uncertain

Answer: Option A

Explanation:

Joe is younger than Kathy and older than Mark, so Mark must be younger than Kathy.

Ajit Singh said: (Apr 23, 2011)  
I can't get it. Please explain in detail.

Sundar said: (Apr 23, 2011)  
@Ajit Singh

The given answer is correct. Let me explain in detail.

1. Joe(J) is younger than Kathy(K) = J < K

2. Mark(M) was born after Joe(J) = M < J

Combine 1 and 2, Result = M < J < K

Now,

3. Kathy(K) is older than Mark(M) = M < K


From this: M < J < K We can understand that K is older than M.

Hope this explanation may help you. Have a nice day!

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