. There are twelve reetangles in a box. Four of those reetangles have circles on them,4 rectangles have squares and four rectangles have triangular shapes on them, Three cards have blue shapes, 4 cards have brown shapes and five cards have red shapes. Three cards have solid colored shapes on them, 5 cards have shaded shape on it, and 4 cards do not have solid colored or shaded shapes on them. If nm represents the universal set of all les, n(B) represents the number of blue cards, n(s) represents the number of cards that that have solid or shaded shapes.
