Probability is a number between zero and one. It calculates how likely an event is to happen. The probability can never be greater than 1 (one) or less than 0 (zero). It can be represented in several ways; in a fraction such 1/2, a decimal such as 0.5 or a percentage such as 50%. The lower the probability, the less likely an event will come about and vice versa. Tossing a coin and calculating the possibility of getting a head or a tail is a simple example of probability. The coin has two faces; either a head or a tail. Hence, the probability of the outcome to be either a head or a tail is 50% or 1/2.
Probability Problem And Its Solution
A spinner containing six equal regions numbered 1 through 6 is spun two times in a row. What is the probability that the first spin yields an even number and the second spin yields an odd number?
Here’s how to do it. There are three odd numbers (1, 3 and 5) and three even numbers (2, 4, and 6) on the spinner. So, the chances of yielding an even number with the first spin are 3 in 6, or 3/6. The chances of yielding an odd number with the second spin are 3 in 6, or 3/6. To calculate the probability of the two events happening (must happen) is by multiplying the individual probabilities together.
3⁄6 × 3⁄6 = 9⁄36 = 1⁄4 or 25%
Also read: Percent, Fraction, And Decimal Equivalences
Probability theory is applied in every day life from a simple coin tossing to risk assessment and modeling. To master up this field of mathematics is an important skill for everyone who wants to assess risks.
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