+210 An element is randomly chosen from among the first 15 rows of Pascal's Triangle. What is the probability that the value of the element chosen is ?
Note: The 1 at the top is often labelled the "zeroth" row of Pascal's Triangle, by convention. So to count a total of 15 rows, use rows 0 through 14.
+210 An element is randomly chosen from among the first 15 rows. I might have left that out.
