MHB I need a formula how to calculate it

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To determine the most likely color of a ball drawn from the bag, one must consider the quantity of each color present. The bag contains 1 white, 6 red, 9 green, and 3 purple balls, making green the most prevalent color. Given the higher number of green balls, it is statistically most likely that a green ball will be drawn. The discussion emphasizes using common sense and basic probability to arrive at the conclusion. Understanding the distribution of colors is key to solving this problem effectively.
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A bag has identical balls of these colors: 1 white, 6 red, 9 green, and 3 purple. Without looking, a ball is drawn from the bag. You would most likely get a

a. green ball
b. purple ball
c. red ball
d. white ball
 
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Abdullah Qureshi said:
A bag has identical balls of these colors: 1 white, 6 red, 9 green, and 3 purple. Without looking, a ball is drawn from the bag. You would most likely get a

a. green ball
b. purple ball
c. red ball
d. white ball
Please show us what you have tried and exactly where you are stuck.

We can't help you if we don't where you are stuck.
 
You title this "I need a formula to calculate this" but this is really a matter of common sense! If there were 1000 red balls and 1 white ball, and you draw one at random, what color is it most likely to be? Why? Apply that idea to this problem.
 
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