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If x^3 > y^2 > z, which of the statements could be true?
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15 Jul 2015, 04:56
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Bunuel wrote:
If x^3 > y^2 > z, which of the statements could be true?
I. x < y < z II. x < z < y III. y < x < z
A. I only B. III only C. I and II only D. II and III only E. I, II and III
Kudos for a correct solution.
The best strategy in such questions is to check one of the conditions with values and eliminate options based on its validity
Given : x^3 > y^2 > z
I. x < y < z is true for x=3, y=4, z=5 i.e. Answers can only be Options A, C or E
II. x < z < y is true for x=3, y=5, z=4 i.e. Answers can only be Options C or E
III. y < x < z is true for x=4, y=3, z=5 i.e. Answers can only be Options E
Answer: option E
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Re: If x^3 > y^2 > z, which of the statements could be true?
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23 Jul 2015, 06:18
1
riyazgilani wrote:
GMATinsight wrote:
Bunuel wrote:
If x^3 > y^2 > z, which of the statements could be true?
I. x < y < z II. x < z < y III. y < x < z
A. I only B. III only C. I and II only D. II and III only E. I, II and III
Kudos for a correct solution.
The best strategy in such questions is to check one of the conditions with values and eliminate options based on its validity
Given : x^3 > y^2 > z
I. x < y < z is true for x=3, y=4, z=5 i.e. Answers can only be Options A, C or E
II. x < z < y is true for x=3, y=5, z=4 i.e. Answers can only be Options C or E
III. y < x < z is true for x=4, y=3, z=5 i.e. Answers can only be Options E
Answer: option E
I am finding it difficult to come up with nos for number picking...? any tips..?
Tips:
1) Try the Positive Integer Values starting from the smallest value. Checking Bigger values might make it more difficult for you so check smaller values first.
2) Try the Negative Integer Values starting from the smallest Absolute values i.e. (-1, -2, -3 etc)
3) Try the Values in the range 0 to 1 and pick easier Numbers (e.g. 1/2, 1/3) in case you have to take square root of values then pick numbers like 1/4, 1/9 etc. Check the similar value in the Values of Negative Range i.e. 0 to (-1)
Summary: The values should be checked in the following 4 ranges Between 0 and 1 Between 0 and -1 Greater than +1 Less than -1 and Don't forget to check at zero if the Scenario requires it.
Practice applying them in questions and in some time you will understand the best values to pick for specific cases
I hope it Helps
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Prosper!!! GMATinsight Bhoopendra Singh and Dr.Sushma Jha e-mail: info@GMATinsight.com I Call us : +91-9999687183 / 9891333772 Online One-on-One Skype based classes and Classroom Coaching in South and West Delhi http://www.GMATinsight.com/testimonials.html
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63% (01:36) correct 
