If R is the set of all real numbers, what do the cartesian products `R xxR`and `R xxR xxR`represent?

Explanation

To solve the question, we need to understand what the Cartesian products \( R \times R \) and \( R \times R \times R \) represent in terms of geometry.

### Step-by-Step Solution:

1. **Understanding Cartesian Product**:
- The Cartesian product \( A \times B \) of two sets \( A \) and \( B \) is the set of all ordered pairs \( (a, b) \) where \( a \in A \) and \( b \in B \).

2. **Finding \( R \times R \)**:
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