6:45 pm ## Probability Problem: What Is The Probability?

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.

Also Read: Percent Problem: What Is The Total Number Of Students?

## 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?

## Solution

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

## Conclusion

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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