Wavelengths of the first lines of the Lymar: series, Paschen series and Balmer series, in hydrogen spectrum are denoted by `lambda_(L) , lambda_(P) and lambda_(B)` respectively. Arrange these wavelengths in increasing order.

Explanation

To solve the problem of arranging the wavelengths of the first lines of the Lyman, Balmer, and Paschen series in increasing order, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Series**:
- The Lyman series corresponds to transitions from higher energy levels to the ground state (n=1).
- The Balmer series corresponds to transitions from higher energy levels to the first excited state (n=2).
- The Paschen series corresponds to transitions from higher energy levels to the second excited state (n=3).
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