Sets
Learn about sets — collections with no duplicates.
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Lesson 1
Sets
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Quiz 2Required
Sets Quiz
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Exercise 3Required
Unique Letters
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Exercise 4Required
Remove Duplicates
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Exercise 5Required
Fix the Set
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Exercise 6Required
Common Friends
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Exercise 7Required
Add to Set
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Exercise 8Required
Fix the Remove
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Exercise 9Required
Unique Words
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Exercise 10Optional
Set Difference
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Exercise 11Optional
Fix the Union
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Exercise 12Optional