Can you please explain this ques

A networking company uses a compression technique to encode the message before transmitting over the network. Suppose the message contains the following characters with their frequency:
{a: 5, b: 9, c: 12, d: 13, e: 16, f: 45}
If the compression technique used is Huffman Coding, how many bits will be saved in the message?

First see how the form huffman tree here https://www.geeksforgeeks.org/huffman-coding-greedy-algo-3/
Now check the 4th question here https://www.geeksforgeeks.org/practice-questions-on-huffman-encoding/

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