Math Problem Statement

A die is rolled once. Find the probabilities of the given events. Leave your answer as a reduced fraction. The number rolled is a 2.

The number showing is an even number.

The number showing is greater than 4.

Solution

Let's analyze each event in terms of the probability of a die roll. A standard die has 6 faces, numbered 1 to 6.

  1. The number rolled is a 2:

    • Only one outcome (rolling a 2) satisfies this event, and there are 6 possible outcomes in total. P(rolling a 2)=16P(\text{rolling a 2}) = \frac{1}{6}
  2. The number showing is an even number:

    • The even numbers on a die are 2, 4, and 6. There are 3 favorable outcomes. P(even number)=36=12P(\text{even number}) = \frac{3}{6} = \frac{1}{2}
  3. The number showing is greater than 4:

    • The numbers greater than 4 on a die are 5 and 6. There are 2 favorable outcomes. P(greater than 4)=26=13P(\text{greater than 4}) = \frac{2}{6} = \frac{1}{3}

So, the probabilities are:

  1. 16\frac{1}{6} for rolling a 2.
  2. 12\frac{1}{2} for rolling an even number.
  3. 13\frac{1}{3} for rolling a number greater than 4.

Would you like more details on any of these steps?

Here are 5 follow-up questions to consider:

  1. What is the probability of rolling an odd number?
  2. What is the probability of rolling a number less than 3?
  3. What is the probability of rolling either a 1 or a 6?
  4. If the die is rolled twice, what is the probability of rolling two even numbers?
  5. What is the probability of rolling a number that is either less than 3 or greater than 4?

Tip: Probabilities for simple events are calculated by dividing favorable outcomes by total possible outcomes.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Probability
Sample Space
Event Outcomes

Formulas

P(Event) = Favorable Outcomes / Total Outcomes

Theorems

Basic Probability Theorem

Suitable Grade Level

Grades 5-7