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probability

a teacher holds 30 class cards of 12 girls and 18 boys. shes huffles the cards and drawn one.
a. what is the probability that the card drawn is a girl's card?
b. what is the probability that the card belongs to a boy?
c. what is the probability that the cards belongs to either a boy or a girl?

a. 12/(12+18) = ?

b. 18/(12+18) = ?

c. 100%

Did you know?

Did you know that probability is a branch of mathematics that deals with the likelihood of an event occurring? In the given scenario, a teacher has 30 class cards, with 12 of them belonging to girls and 18 to boys. Let's explore the probabilities: a. The probability of drawing a girl's card can be calculated by dividing the number of girl's cards by the total number of cards. In this case, the probability is 12/30, which simplifies to 2/5. b. Similarly, the probability of drawing a boy's card is calculated by dividing the number of boy's cards by the total number of cards. In this case, the probability is 18/30, which also simplifies to 3/5. c. To calculate the probability of drawing a card belonging to either a boy or a girl, we add the individual probabilities from a and b. Therefore, the probability is (2/5) + (3/5), which equals 1. Understanding probability allows us to determine the likelihood of different outcomes and make informed decisions based on data and statistics.