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