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swanidhi
Adam, Cara, Carlos and Donna are friends. Cara and Carlos are the same age. Which of these 4 friends is the youngest?

1. Cara is older than Adam.
2. Carlos is older than Donna.

+1 Kudos, if this helped! Just 1 kudos short from availing GmatClub Tests :lol:


This feels more like an LSAT question, lol.
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swanidhi
Adam, Cara, Carlos and Donna are friends. Cara and Carlos are the same age. Which of these 4 friends is the youngest?

1. Cara is older than Adam.
2. Carlos is older than Donna.

+1 Kudos, if this helped! Just 1 kudos short from availing GmatClub Tests :lol:

Given : Total friends = 4 nos

A, C1, C2, D

C1 = C2

Question: Who is the youngest?

St 1: C1 > A . No info about C2 and D. Insufficient

St 2: C2 > D. No info about C1 and A. Insufficient

From 1 and 2, we only know that A and D are younger than C1 and C2.

But there is no information who is younger in between A and D. Insufficient
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The answer is E. From both statements we know that Cara and Carlos are the oldest among four friends, but there is no other piece of information which can help us to determine the relationship between age of Adam and donna, thus we can not tell which one is youngest from given information.
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swanidhi
Adam, Cara, Carlos and Donna are friends. Cara and Carlos are the same age. Which of these 4 friends is the youngest?

(1) Cara is older than Adam.
(2) Carlos is older than Donna.

Since Carlos and Cara are the same age, we only need to know the relationship of Adam, Donna, and Carlos/Cara.

(1) C > A

We don't know D, however, INSUFFICIENT.

(2) C > D

We don't know A, however. INSUFFICIENT.

(1&2) Together, we know C > A and C > D. However, we don't know if A > D or A < D. INSUFFICIENT.

Answer is E.
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Together no relationship between A and D and hence insufficient.
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