What does it mean by one set of numbers being a subset of the other?
If 3, 4,5,6 is a set of numbers, then 4,5 is a subset.
When we say that one set of numbers is a subset of another set of numbers, it means that all the numbers in the first set are also present in the second set. In other words, every element in the first set is also an element in the second set.
In your example, the set of numbers {3, 4, 5, 6} is the larger set, while the set of numbers {4, 5} is the smaller set. We say that {4, 5} is a subset of {3, 4, 5, 6} because every number in the smaller set (4 and 5) is also present in the larger set.
To determine if one set is a subset of another, you can compare the numbers in the two sets. If all the numbers in the smaller set are also present in the larger set, then it is a subset. If there is at least one number in the smaller set that is not present in the larger set, then it is not a subset.