Inductive and Deductive Reasoning Assignment

Details

1. Create a number trick that always ends with number of siblings you have or anyone else has. Use at least three different operations and at least four steps.
2. Test your number trick at least 3 times to show that it works.
3. Use deductive reasoning to develop a proof of your conjecture.
4. Is there a number that will not work in your number trick? Explain.

Here is an example: