Question

Choose a number from 1 to 20. Double it, add 10, divide by 2, and then subtract the number you started with. You'll end up with the number 5 everytime. Why?​

Answer 1

Answer:

Choose a number from 1 to 20. Double it, add 10, divide by 2, and then subtract the number you started with. (Based on what you learned with Problem 2, you should be able to predict this number along with me.) Your number is 5