확률 문제

단일 사건, 복합 사건, 비복원 추출을 정확한 분수 답과 함께.

주사위와 동전 같은 단일 사건, 주사위 합과 카드 뽑기 같은 복합 사건, 구슬 주머니에서의 비복원 추출 확률을 다룹니다.

풀이 도구에 확률 문제를 입력하세요.

채점 기능이 있는 적응형 확률 연습.

빠른 확률 계산.

확률 예제 문제

아래 예제 문제는 현재 영어로만 제공됩니다.

1. A card is drawn at random from a standard 52-card deck. What is the probability it is a heart?+

답: 1/4

Step 1: A standard deck has 4 suits of 13 cards each, so there are 13 hearts out of 52 cards. Step 2: Probability = 13/52 = 1/4.

2. Two fair six-sided dice are rolled. What is the probability that the sum is 7?+

답: 1/6

Step 1: There are 6 × 6 = 36 equally likely outcomes for two dice. Step 2: 6 of those outcomes add up to 7. Step 3: Probability = 6/36 = 1/6.

3. Two fair six-sided dice are rolled. What is the probability that the sum is 3?+

답: 1/18

Step 1: There are 6 × 6 = 36 equally likely outcomes for two dice. Step 2: 2 of those outcomes add up to 3. Step 3: Probability = 2/36 = 1/18.

4. Two fair six-sided dice are rolled. What is the probability that the sum is 4?+

답: 1/12

Step 1: There are 6 × 6 = 36 equally likely outcomes for two dice. Step 2: 3 of those outcomes add up to 4. Step 3: Probability = 3/36 = 1/12.

5. Two fair six-sided dice are rolled. What is the probability that the sum is 6?+

답: 5/36

Step 1: There are 6 × 6 = 36 equally likely outcomes for two dice. Step 2: 5 of those outcomes add up to 6. Step 3: Probability = 5/36 = 5/36.

6. Two fair six-sided dice are rolled. What is the probability that the sum is 8?+

답: 5/36

Step 1: There are 6 × 6 = 36 equally likely outcomes for two dice. Step 2: 5 of those outcomes add up to 8. Step 3: Probability = 5/36 = 5/36.