Who Am I?
by Georgia M. P. Scott
inVirginia Mathematics Teacher

1. I am the largest prime number which is less than 36.
   Who am I?
2. I am the smallest even number which when rounded to the nearest ten is 90.
   Who am I?
3. I am the least common multiple of 9 and 12.
   Who am I?
4. I am the largest composite number which is less than 20.
   Who am I?
5. I am the largest prime number which, when rounded to the nearest ten, is 40.
   Who am I?
   
   
6. I am the only prime number between 48 and 58.
   Who am I?
7. I am an even number greater than 7.   I am also a common factor of 12 and 36.
   Who am I?
8. I am the largest composite number which, when rounded to the nearest ten, is 40.
   Who am I?
9. I am an odd composite number.   When rounded to the nearest ten, you get 10.
   Who am I?
10. I am between 20 and 50.   I am a multiple of 13.   I am odd.
    Who am I?
    
    
11. I am an even prime number.
    Who am I?
12. I am the smallest number having exactly six distinct prime factors.
    Who am I?
13. I am the only common factor of 251 and 673.
    Who am I?
14. Dividing a number by me gives the same answer as multiplying the number by 3.
    Who am I?
15. I am the only common factor of 211 and 811.
    Who am I?
    
    
16. If you multiply me by 9, you get 45.
    Who am I?
17. I am the smallest even number which, when rounded to the nearest hundred, is 300.
    Who am I?
18. If you divide me by 1/4, you get 7.
    Who am I?
19. I have only one multiple.
    Who am I?
20. I am between 20 and 30.   I am a multiple of 7.   I am even.
    Who am I?
    
    
21. I am a common multiple of 6 and 9.   I am a factor of 18.
    Who am I?
22. I am an odd number.   I am a multiple of 5.
    When you round me to the nearest ten, you get 30.
    Who am I?
23. I am the least common multiple of 6 and 9.
    Who am I?
24. I am the greatest common factor of 30 and 48.
    Who am I?
25. I have exactly three prime factors.   Two of my three factors are even.
    When you round me to the nearest ten, you get 50.
    Who am I?

Send any comments or questions to: David Pleacher