Answer:
0.5.
Step-by-step explanation:
Number of red marbles = 50
Yellow marble = 40
Green marble = 10
Total number of marble = 50+ 40 + 10 = 100
Probability of getting yellow marble = [tex]\dfrac{40}{100}[/tex]
= 0.4
Probability of getting green marble = [tex]\dfrac{10}{100}[/tex]
= 0.1
Probability of getting either red or green marble = 0.4 + 0.1 = 0.5
Hence, the required probability is equal to 0.5.
