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17 Mar 2018, 00:25
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C
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
95%
(hard)
Question Stats:
48% (02:40) correct
52%
(02:21)
wrong
based on 129
sessions
History
Date
Time
Result
Not Attempted Yet
P, Q, R are three distinct positive numbers. Which is the greatest number among P, Q, R?
(1) R - P < Q - P
(2) Q^2 * R > R^2 * P > P^2 * Q
(1) R - P < Q - P
(2) Q^2 * R > R^2 * P > P^2 * Q
17 Mar 2018, 00:56
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(1) R - P < Q - P
Rewriting this equation we will get R < Q
However, we don't have any information about P (Insufficient)
(2) Q^2 * R > R^2 * P > P^2 * Q
Case 1: If Q = 4, R = 3, P = 2
Then 48 > 18 > 12
Case 2: If Q = 3, R = 3.1, P = 2
Then 27.3 > 19.22 > 12
Here, in case 1, Q > R > P whereas in case 2, Q < R > P (Insufficient)
Combining the information present in both the statements
Case 2 is not possible when Q > R and Q is the largest number among P,Q, and R.(Sufficient - Option C)
Rewriting this equation we will get R < Q
However, we don't have any information about P (Insufficient)
(2) Q^2 * R > R^2 * P > P^2 * Q
Case 1: If Q = 4, R = 3, P = 2
Then 48 > 18 > 12
Case 2: If Q = 3, R = 3.1, P = 2
Then 27.3 > 19.22 > 12
Here, in case 1, Q > R > P whereas in case 2, Q < R > P (Insufficient)
Combining the information present in both the statements
Case 2 is not possible when Q > R and Q is the largest number among P,Q, and R.(Sufficient - Option C)
20 Mar 2018, 01:08
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pushpitkc
pls look at the part highlighted by me in your explanation above...
Question States : P, Q, R are three distinct positivenumbers.
if three are distinctive number in such case.. case I only persists.
imo Answer must be B.
need guidance from expert.
