A jar contains 6 blue cubes, 7 blue spheres, 3 green cubes, and 4 green spheres. If you select an object at random, what is the probability that the object is green or a cube?
A. 4
B. 13/20
C. 4/5
D. 3/20

*let m∠cob = 50°30’, m∠aob = 70° and m∠aoc = 20°30’. could point c be in the interior of ∠aob? why? a. point c could be the interior of aob but it is not the only case b. point c is the interior of aob c. point c is not the interior of aob d. the given is not possible for the plane geometry answer