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 common mistake do students make when calculating probabilities?

Explain why the answer to the probability question remains the same despite the confusion.