A pencil case, a book, and a laptop
Determine which of the three given objects is the heaviest and which is the lightest.
Based on the average weight of the objects, the heaviest object among the given items is a laptop. The lightest object would likely be the pencil case. The book would be in-between in terms of weight. However, it's important to note that weights can vary depending on the specific models and sizes of the items.