Teeth absent from dental formula of human baby are premolars/molars.

Explanation

To solve the question regarding the absence of certain teeth in the dental formula of a human baby, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Types of Teeth**:
- Humans have different types of teeth, which include incisors, canines, premolars, and molars. Each type has a specific function in the process of chewing and digestion.

2. **Identify the Sets of Teeth**:
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