Back to Universal Sets, Complement Sets, and Subsets — Problem 1 · Task Set 2

Exercises: Universal Sets, Complement Sets, and Subsets

Work through each section in order. Use correct set notation (curly brackets, U, ', ⊂) in your answers.

Grade 6·18 problems·~23 min·Uganda NCDC Primary 6 Mathematics·lesson·sets-02

Work through problems with immediate feedback

Fluency Practice

In the context 'all fruits in a basket,' U = {oranges, mangoes, bananas, pineapples}. If the context changes to 'all fruits in the market,' what happens to U?

U stays exactly the same set, {oranges, mangoes, bananas, pineapples}, no matter what the context is.

U can change, because the universal set depends on the context being considered — a market likely has more kinds of fruit than one basket.

U becomes an empty set, because a market is a different place from a basket.