Let’s count. Characteristic OGF and EGF

Do your best in trying to solve the following problems. It is normal that this step will take some time, we recommend to perseverate and wait before looking at the complete solution of the exercises in the video or in the pdf below.

Exercise 1. Compute the characteristic OGF of the subsets of odd and even natural numbers.

Exercise 2. Compute the characteristic EGF of the subsets of odd and even natural numbers.