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23 Sep 2018, 05:03
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B
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Difficulty:
5%
(low)
Question Stats:
93% (00:29) correct
7%
(00:32)
wrong
based on 601
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Is r greater than 0.27?
(1) r is greater than 1/4
(2) r is equal to 3/10
(1) r is greater than 1/4
(2) r is equal to 3/10
23 Sep 2018, 05:52
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Bunuel
Is r greater than 0.27?
(1) r is greater than 1/4
(2) r is equal to 3/10
(1) r is greater than 1/4
(2) r is equal to 3/10
Statement 1: r > 1/4 means r>0.25. It could be 0.26 ,0.27. Not Sufficient.
Statement 2: r = 3/10 = 0.3. Sufficient.
The best answer is B.
palaknayyar
08 May 2021, 10:31
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Quote:
Is r greater than 0.27?
(1) r is greater than 1/4
(2) r is equal to 3/10
(1) r is greater than 1/4
(2) r is equal to 3/10
This is a yes/no question therefore a firm yes/no will get us to the answer.
(Pro tip: always look for 1 case for yes and no each for such questions)
Let us assess the statements individually:
S1: r> 1/4. 1/4 = 0.25, and so r being > than 0.25 is not a guarantee that r will be greater than 0.27 also.
r could very well be more than 0.25 but at the same time less than 0.27. Answer 'No'
r could also be greater than 0.27 altogether. answer 'Yes'
clearly, with 2 opposing views, this statement is not sufficient. Strike off A and D.
S2: r= 3/10, which means r=0.30. clearly greater than 0.27. Sufficient.
Final answer: B.
