A ceral company puts a colored ring in each box of cereal. there are 6 different colors.

2/5

Step-by-step explanation:

Given in the question,

Total number of cereal box = 50

number of cereal box which have blue rings = 15

number of cereal box which have yellow rings = 5

Probability = favorable outcome / total number of outcome

Probability = (15+5) / 50

Probability = 20 / 50

Probability = 2/5