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31 Jan 2016, 07:36
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A
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Difficulty:
15%
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Question Stats:
72% (00:52) correct
28%
(01:11)
wrong
based on 163
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What is the value of \(\frac{14m^4}{s^6}\) ?
(1) \(m^2 = 3s^3\)
(2) \(s^6 = 64\)
(1) \(m^2 = 3s^3\)
(2) \(s^6 = 64\)
31 Jan 2016, 16:54
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What is the value of 14m^4/s^6 ?
14m^4/s^6
=14m^4*s^-6
(1) m^2 = 3s^3
m^4 = 9s^6
14m^4*s^-6
14*9s^6*s^-6
=14*9
Sufficient
(2) s^6 = 64
No indication of the value of m
Insufficient
Answer: A
14m^4/s^6
=14m^4*s^-6
(1) m^2 = 3s^3
m^4 = 9s^6
14m^4*s^-6
14*9s^6*s^-6
=14*9
Sufficient
(2) s^6 = 64
No indication of the value of m
Insufficient
Answer: A
01 Feb 2016, 05:47
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Forget conventional ways of solving math questions. In DS, Variable approach is the easiest and quickest way to find the answer without actually solving the problem. Remember equal number of variables and independent equations ensures a solution.
What is the value of 14m^4/s^6 ?
(1) m^2 = 3s^3
(2) s^6 = 64
When you modify the original condition and the question, they become 14m^4/s^6=14(m^2/s^3)^2=?. When you have a look at m^2/s^3=3 in 1), it is unique and sufficient. Therefore, the answer is A.
-> Once we modify the original condition and the question according to the variable approach method 1, we can solve approximately 30% of DS questions.
What is the value of 14m^4/s^6 ?
(1) m^2 = 3s^3
(2) s^6 = 64
When you modify the original condition and the question, they become 14m^4/s^6=14(m^2/s^3)^2=?. When you have a look at m^2/s^3=3 in 1), it is unique and sufficient. Therefore, the answer is A.
-> Once we modify the original condition and the question according to the variable approach method 1, we can solve approximately 30% of DS questions.
