https://file.aiquickdraw.com/mathbot/file/17255276739923u660g8d.jpg

جواب صحیح کدام گزینه است 

The image contains a math question in Persian. It roughly translates to:

"A bag contains a set of 5 coins, among which 1 coin is real and the other 4 are counterfeit, and the counterfeit coins are lighter than the real one. What is the minimum number of weighings required to find the real coin using a balance scale?"

Options:
1. 2
2. 3
3. 4
4. 1

### Solution:

To solve this, we need to think about the strategy of using a balance scale to identify the single real coin among 5 coins, where the fake coins are all lighter.

#### Step-by-step approach:
1. **First Weighing**: Divide the 5 coins into two groups: one group of 2 coins and another group of 2 coins, leaving 1 coin aside.
   - If

جواب صحیح کدام گزینه است

Discover the minimum number of weighings needed to find the real coin among 5 coins, where 4 are counterfeit. This problem involves concepts from logic and probability, suitable for students in Grades 6-8.

Math Problem Statement

Solution

Ask a new question for Free

By Image

Math Problem Analysis

Mathematical Concepts

Formulas

Theorems

Suitable Grade Level

Related Recommendation