Question

Three Statements S1, S2 and S3 are given below followed by a Question :

S1 :C is younger than D, but older than A and B. 

S2 : D is the oldest.

S3 : A is older than B.

Question :

Who among A, B, C and D is the youngest?

Which one of the following is correct in respect of the above Statements and the Question?

1. S1 alone is sufficient to answer the Question.
2. S1 and S2 together are sufficient to answer the Question. 
3.  S2 and S3 together are sufficient to answer the Question. 
4. S1 and S3 together are sufficient to answer the Question. 

Answer 1

Correct Answer - Option 4 : S1 and S3 together are sufficient to answer the Question. 

S1 :C is younger than D, but older than A and B. 

Case 1 : D > C >A > B

Case 2 : D > C >B > A

Either A or B is youngest.

S2 : D is the oldest.

S3 : A is older than B.

A > B

Combining case 1 of S1 and S3, we get :

D > C > A > B

B is youngest.

Hence, S1 and S3 together are sufficient to answer the Question.