Ruby Intermediate Quiz 3

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Quiz 3
1. Used to group multiple return values into a single object.
2. Used to force a method to accept only keyword arguments.
3. Used to combine hash values.
4. Used to capture remaining arguments as a hash.
5. Used to define private methods.
6. The difference between `extend` and `include`.
7. A way to ensure a block of code runs after a method finishes.
8. Used to find the intersection of two arrays.
9. A way to represent a set of fixed data structures.
10. Used to get a specific value from a nested data structure.
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