>>> sender: "Ruby Quiz" date: "Fri, Jun 23, 2006 at 10:31:52PM +0900" <<<EOQ
> [..]
> The input and output should be as follows:
> 
>   $ ruby pp_pascal.rb 10
>                               1                            
>                            1     1                         
>                         1     2     1                      
>                      1     3     3     1                   
>                   1     4     6     4     1                
>                1     5    10    10     5     1             
>             1     6    15    20    15     6     1          
>          1     7    21    35    35    21     7     1       
>       1     8    28    56    70    56    28     8     1    
>    1     9    36    84    126   126   84    36     9     1 
> 
> A number should be given as command-line argument.  This is the amount of rows
> the triangle has. For the output, there should be spacing between the numbers
> based on the size of the numbers with the most digits, so it will look like a
> proper triangle.
question:

    Does this triangle:
                               1
                            1     1
                         1     2     1
                      1     3     3     1
                   1     4     6     4     1
               1     5     10     10     5     1
           1     6     15     20     15     6     1
        1     7     21     35     35     21     7     1
    1     8     28     56     70     56     28     8     1
1     9     36     84     126     126     84     36     9     1
    
conform with the 'proper triangle' definition?

Thanks,
Alex