Answer:
P(a triangle or a square is chosen first)
Step-by-step explanation:
Probability of an outcome is the ratio of number of favorable outcome to total number of outcomes.
Total number of outcomes= 5 + 2 + 2 + 4 = 13
P(a triangle or a square is chosen first) = P(a triangle chosen first) + P(a square chosen first)
P(a triangle or a square is chosen first) Â Â Â Â Â