# Determining common factors

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##### Intros

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##### Examples

###### Lessons

- What are the factors of 20?
- What are the common factors of each pair of numbers?
- Margaret has 45 balloons and 60 lollipops. She wants to put together goody bags for her birthday party that have the same numbers of balloons and lollipops in each bag. What is the greatest number of goody bags that she can put together?
- Michelle has 12 red flowers, 28 blue flowers, and 36 yellow flowers. She wants to make bouquets with the same number of each color of flower in each bouquet. What is the greatest number of bouquets she can make?

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