Math Problem Statement

A coin is tossed and a die is rolled. Find the probability of getting a head and a number greater than 1.

Solution

To solve the problem, we analyze the events step-by-step:

  1. Coin Toss: A coin has two outcomes: Head (H) and Tail (T).

    • Probability of getting a Head = 12\frac{1}{2}.
  2. Die Roll: A standard die has six outcomes: {1, 2, 3, 4, 5, 6}.

    • The numbers greater than 1 are {2, 3, 4, 5, 6}.
    • Probability of rolling a number greater than 1 = 56\frac{5}{6}.
  3. Combined Event: The events are independent, so the probability of both occurring (a head from the coin and a number greater than 1 from the die) is the product of their individual probabilities:

P(Head and Number > 1)=P(Head)×P(Number > 1)P(\text{Head and Number > 1}) = P(\text{Head}) \times P(\text{Number > 1})

P(Head and Number > 1)=12×56=512P(\text{Head and Number > 1}) = \frac{1}{2} \times \frac{5}{6} = \frac{5}{12}

Final Answer:

The probability of getting a head and a number greater than 1 is 512\frac{5}{12}.


Would you like further details or additional examples? Here are 5 related questions:

  1. What is the probability of getting a tail and a number greater than 4?
  2. What is the probability of getting a head and an odd number?
  3. If the coin is biased with P(Head)=0.6P(\text{Head}) = 0.6, how does the probability change?
  4. What is the probability of getting a head or a number greater than 1?
  5. How does the answer change if the die is replaced with a 10-sided die?

Tip: For combined events, always confirm whether they are independent before multiplying probabilities.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Probability
Independent Events
Basic Probability Rules

Formulas

Probability of an event = Favorable outcomes / Total outcomes
Probability of independent events = P(Event 1) × P(Event 2)

Theorems

Multiplication rule for independent events

Suitable Grade Level

Grades 6-8