In the hierarchy of classification, which grouping will have the smallest number of organisms with maximum common characteristics and which will have the largest number of organisms?

Explanation

### Step-by-Step Solution:

1. **Understanding the Hierarchy of Classification**:
- The classification of living organisms is organized in a hierarchical structure. The main levels of this hierarchy are: Kingdom, Phylum (or Division), Class, Order, Family, Genus, and Species.

2. **Identifying the Group with the Smallest Number of Organisms**:
- Among these categories, the **Species** level represents the most specific classification. It includes organisms that are very closely related and share maximum common characteristics. Therefore, the grouping with the smallest number of organisms is **Species**.

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