Math Problem Statement

サッカー部9人、水泳部8人、柔道部5人からランダムで3人を選んだ時、サッカー部員が1人も選ばれない確率は何%か。小数点以下第一位を四捨五入して整数のみで答えよ。

Solution

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Probability
Combinatorics

Formulas

Combination formula: \( \binom{n}{r} = \frac{n!}{r!(n-r)!} \)
Probability formula: \( P(A) = \frac{\text{Number of favorable outcomes}}{\text{Total number of outcomes}} \)

Theorems

Basic probability theorem

Suitable Grade Level

Grades 9-12