How to find the theoretical probability of choosing a card

The video tutorial explains how to calculate the probability of drawing a specific card from a set of five cards numbered 1 to 5. The instructor initially makes a common mistake in the calculation but corrects it, emphasizing the importance of dividing the number of favorable outcomes by the total number of outcomes. The correct probability of drawing a card numbered 2 is 1/5 or 20%. The video highlights common errors students make in probability calculations and provides a clear explanation of the correct method.

What is the total number of cards in the set described in the video?

• 4 cards

• 6 cards

• 5 cards

• 3 cards

How many cards are numbered '2' in the set?

• One

• Two

• None

• Three

What is the probability of drawing the card numbered '2' from the set?

• 20%

• 10%

• 30%

• 40%

What is a common mistake students make when calculating the probability in this scenario?

• Using the wrong formula

• Misidentifying the number of favorable outcomes

• Ignoring the total number of cards

• Counting all cards as favorable outcomes

What is the correct fraction representing the probability of drawing the card numbered '2'?

• 1/4

• 1/5

• 1/3

• 1/6