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collection of tough problems from G PREP - 39

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by abhasjha » Mon Feb 08, 2010 3:33 am
In a certain conference room each row of chairs has the same number of chairs, and the number of rows is 1 less than the number of chairs in a row. How many chairs are in a row?

1)There is a total of 72 chairs

2)After 1 chair is removed from the last row, there is a total of 17 chairs in the last 2 rows
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Source: — Data Sufficiency |
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by harsh.champ » Mon Feb 08, 2010 4:05 am
abhasjha wrote:In a certain conference room each row of chairs has the same number of chairs, and the number of rows is 1 less than the number of chairs in a row. How many chairs are in a row?

1)There is a total of 72 chairs

2)After 1 chair is removed from the last row, there is a total of 17 chairs in the last 2 rows
1:-0insufficient
2:-sufficient
we have 1,2,3....it goes on like this
B
Last edited by harsh.champ on Sun Feb 21, 2010 9:02 pm, edited 1 time in total.
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by ajith » Tue Feb 09, 2010 3:22 am
abhasjha wrote:In a certain conference room each row of chairs has the same number of chairs, and the number of rows is 1 less than the number of chairs in a row. How many chairs are in a row?

1)There is a total of 72 chairs

2)After 1 chair is removed from the last row, there is a total of 17 chairs in the last 2 rows
Please do a search as this problem is discussed before
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