What is the sum of mole fractions of all the components in a three-component system?

Explanation

To find the sum of mole fractions of all the components in a three-component system, we can follow these steps:

### Step-by-Step Solution:

1. **Define the Components**:
Let the number of moles of the three components be:
- Moles of component A = \( n_A \)
- Moles of component B = \( n_B \)
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