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mlane25269
- Master | Next Rank: 500 Posts
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- Joined: Fri Jun 13, 2008 7:31 am
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The question is asking which of the options must be less than 1.
Note: The value of r ranges from 0.1 to 0.9 & value of s ranges from 1.1 to 1.9
I - Dividing r by s will result in a fraction that is less than 1. So, this statement is sufficient.
II - Mutliplying the value of r & s will give mixed results. Multiplying 1.1 & 0.1 will results in 0.11 which is less than 1, but multiplying 1.9 & 0.9, will results in 1.71, which is greater than 1. So, this is a not a must condition.
III - This is also not a must condition. Subtract the extremes, 1.9 - 0.1 & the value is more than 1, while subtracting 1.1 - 0.9 will result in a value less than 1.
Hence, answer should be A.
I was in a hurry to solve it in under a min & got all my fractions wrong. 
