Rebaz wrote:
I find this a very confusing and irritating question. Can someone please visualize the floor with a picture?
How can you have right and left of 9 rows?
each row of tiles to the right of the first row contains two fewer tiles than the row directly to its left
Below i have 9 rows, but i cannot visualize right and left of the rows. Very confusing language!!!
1 ______________
2 ______________
3 ______________
4 ______________
5 ______________
6 ______________
7 ______________
8 ______________
9 ______________
Shouldnot the question be that each row contains 2 fewer than the one below it, instead of the confusing language of left to it?
Hi ahuan077,
The use of the word "row" in this question is a bit strange, since we're told that rows go from 'left-to-right' and normally we think of rows as going from 'top-to-bottom.' As such, it would probably be easier if you think of this question in terms of "columns" - we start with the 1st column, then the 2nd column, then the 3rd column, etc. going from left-to-right.
We're told that each "column" has 2 fewer tiles than the one to its immediate left, so here's a simple example of what the columns could be if there was no other information to work with:
1st column = 10 tiles
2nd column = 8 tiles
3rd column = 6 tiles
4th column = 4 tiles
5th column = 2 tiles
6th column = 0 tiles
We're clearly dealing with LOTS more tiles though (504 tiles) and only 9 columns, but this IS a constant sequence of values, so there are a number of patterns that we can use to our advantage (my original post - a few posts up) explains them.
GMAT assassins aren't born, they're made,
Rich
Contact Rich at: Rich.C@empowergmat.com