Guess My Number
(with Derivatives)

Guess my number from the following clues.   Who am I?
(You must first solve the derivatives).

Note to teachers:
I would display one clue at a time and allow students to make a guess after each problem.
Or you could have the students write down all the possibilities after each clue.

1. I am a digit whole number.
   
   
2. My tens digit is .
   
   
3. I am divisible by .
   
   
4. I am divisible by .
   
   
5. I am less than .
   
   
6. I am divisible by .
   
   
7. My ones digits is .
   
   
8. My hundreds digit is greater than my ones digit.
   
   
9. Each of my digits is different.
   
   
10. My ones digit is greater than my tens digit.
    
    

      Who am I?

Answer: I am 756.

Here are the answers to the seven derivative problems:
(1)     3
(2)     5
(3)     4
(4)     9
(5)     800
(6)     7
(7)     6

Send any comments or questions to: David Pleacher