Math Problem Statement

PDi dalam kantong terdapat 4 bola merah dan 5 bola putih. Jika di dalam kantong diambil 2 bola sekaligus, peluang terambil satu bola merah dan satu bola putih

Solution

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Math Problem Analysis

Mathematical Concepts

Probability
Combinatorics

Formulas

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

Theorems

Basic Counting Principle

Suitable Grade Level

Grades 10-12