In how many ways first and second rank in mathematics, first and second rank in physics, first rank in chemistry, and first rank in English be given away to a class of 30 students.

Explanation

To solve the problem of distributing ranks in various subjects among a class of 30 students, we will follow these steps:

### Step-by-Step Solution:

1. **Mathematics Ranks**:
- For the first rank in Mathematics, we can choose any one of the 30 students.
- **Ways to choose the first rank**: 30
- For the second rank in Mathematics, we can choose from the remaining 29 students (since the student who got the first rank cannot get the second rank).
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