Probability Concepts and Calculations

This video tutorial explains how to calculate probabilities for different events involving drawing balls of various colors from a jar. It covers the probability of drawing a red ball, a red or yellow ball, not drawing a red ball, and drawing a green ball. The tutorial demonstrates how to express probabilities as fractions, decimals, and percentages, and includes simplification of fractions where applicable.

What is the total number of balls in the jar?

• 20

• 25

• 15

• 10

How is probability expressed in different forms?

• Whole Number, Decimal, Fraction

• Fraction, Decimal, Percent

• Decimal, Whole Number, Percent

• Percent, Whole Number, Fraction

What is the probability of drawing a red ball as a fraction?

• 3/10

• 1/5

• 3/20

• 1/4

What is the decimal equivalent of the probability of drawing a red ball?

• 0.25

• 0.10

• 0.15

• 0.20

What is the probability of drawing a red or yellow ball as a simplified fraction?

• 2/3

• 1/2

• 4/5

• 3/4

What is the percentage equivalent of the probability of drawing a red or yellow ball?

• 75%

• 80%

• 50%

• 60%

What is the probability of drawing a ball that is not red as a fraction?

• 17/20

• 3/4

• 1/2

• 4/5

What is the decimal equivalent of the probability of drawing a ball that is not red?

• 0.75

• 0.90

• 0.80

• 0.85

What is the probability of drawing a green ball from the jar?

• 1/5

• 0

• 1/20

• 1/10

What is the percentage equivalent of the probability of drawing a green ball?

• 15%

• 0%

• 5%

• 10%