Probability Concepts and Problems

The video tutorial explains the concept of probability as the chance of an event occurring. It provides examples using a coin toss, picking balls from a bag, selecting a letter from a word, rolling a dice, and choosing pens from a pencil case. Each example demonstrates how to calculate probability by dividing the number of favorable outcomes by the total number of possible outcomes.

What is the basic definition of probability?

• The ratio of favorable outcomes to total outcomes.

• The number of possible outcomes.

• The sum of all possible outcomes.

• The likelihood of an event occurring.

In a coin toss, what is the probability of getting heads?

• 2/3

• 1/2

• 1/4

• 1/3

If a bag contains 1 red ball and 2 blue balls, what is the probability of drawing a red ball?

• 1/2

• 2/3

• 1/3

• 1/4

What is the probability of picking the letter 'A' from the word 'maths'?

• 1/6

• 1/3

• 1/4

• 1/5

If a bag contains 1 red ball and 2 blue balls, what is the probability of drawing a blue ball?

• 2/3

• 1/2

• 1/4

• 1/3

What is the probability of rolling a number five or below on a standard dice?

• 5/6

• 2/3

• 1/2

• 1/6

If a pencil case contains 4 blue pens and 5 red pens, what is the probability of picking a red pen?

• 4/9

• 2/3

• 5/9

• 1/2

What is the probability of an event that is certain to happen?

• 2

• 1/2

• 1

• 0

What is the probability of an impossible event?

• 0

• 1

• 2

• 1/2

If a bag contains 3 red balls and 2 blue balls, what is the probability of drawing a red ball?

• 1/2

• 3/5

• 1/3

• 2/5