4. The first step of this trick was to pick a number between 1 and 10. You probably assumed that this meant to pick a counting number: 1,2,3,4,5,6,
7,8,9, or 10

a. Would this trick work if a person picked a decimal number between
1 and 10, such as 2.5 or 4.75? How do you know?

b. Would it work if they picked a number greater than 10 or less than
0? How do you know?