GMAT Question of the Day

1/91+1/92+…1/100=S. Which of the following is less than S?

I.1/8
II. 1/9
III. 1/10

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1. DiD says:

   August 11, 2007 at 1:36 am

   III
2. AP says:

   August 11, 2007 at 11:14 am

   III
3. Ganesh says:

   August 19, 2007 at 8:45 am

   explain plz!!!
4. JG says:

   August 11, 2010 at 1:56 am

   III. Real quick way to figure this one out is that 1/91 will result in the largest number out of the range given (it being .0110 when rounded.) knowing that is the largest you can multiply that by 10 (the amount of numbers in the given range) and the result is .1099. This being the highest number multiplied 10 times and knowing that the actual result will be lower than .1099, Option III is the only one which will give meets these requirements. Also, it is helpful to know that 1/100, or the the lowest number in the range, multiplied by 10 will give you option III.