I don’t understand this

Alicense plate is to consist of 44 digits followed by 55 uppercase letters. determine the number of different license plates possible if the first and second digits must be? odd, and repetition is not permitted.

Do 12/14 and 8/10 have the same value? explain your answer.

What is the result of adding the system of equations? 2x+y=4 3x-y=6