How can I calculate the elements quantity in a chebyshev band stop filter and how can I involve pass band and stop band attenuation in my calculation?

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Malcolm White

Look in this book - all you need is there. It will also give you clues to identify more modern resouces.

https://www.microwaves101.com/downloads/MYJ%20part%201.pdf

https://www.microwaves101.com/downloads/MYJ%20part%202.pdf

Adam Abramowicz

You can make a simple approximation; stop band 1 MHz, pass band 9 MHz.

The ratio of the bands is 9. Assuming Czebyshev type of the filter with n=3 you will have 49 dB of attenuation in the stop band. Thus you need a filter of the 4 order.