Computational Thought Process:

If we are considering a symmetric triangle with 20 rows (n=20), use the equation:

{[(n x 2) - 1] [(c x 2) - 1]}/2

to find the number of blank spaces before we start printing the asterisks for each of the following rows (row number = c)

Example: Row 7 (c=7) 7 --> {[(n x 2) - 1] [(c x 2) - 1]}/2 = {[(20x2)-1]-[(7x2)-1]}/2 = {[40-1]-[14-1]}/2 = {39-13}/2 = 26/2 = 13

Write only numerical values:

8?