1) The us flag has 50 stars.

2) There are an odd number of horizontal rows of stars on the flag.

3) There are x rows of stars with y stars in each "light" row, and (x+1) rows of stars with (y+1) stars in each "heavy" row.

4) From #2 and #3 above, x+(x+1) has to be an odd integer assuming x is greater or equal to 1, and less than or equal to 49.

5) y is an integer because there are no fractional or imaginary stars.

How many possible horizontal number of rows of stars could be on the US flag using the five statements above?

Allow for the flag to be hanging horizontally or in a vertical configuration.

The solutions got moved some how? The top solution should be on the bottom, and the bottom solution should be on the top.

all solutions below
3
11
9
9 and 11 only
33

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Bill, Brilliant.org scrambles up the order of solutions. You can't depend on how choices are ordered. My suggestion is to list the choices in the problem statement as 1), 2), 3)... etc, and then the choices should be 1, 2, 3... etc, which will be scrambled up. Like this

1) 9 and 11 only

2) All solutions below

3) 33

4) 3

5) 9

6) 11

etc, however you want to order them