14. Write three numbers greater than 20 that have 9 as a factor.

Did you know that 9 is a multiple of 3? This unique relationship means any number that is a multiple of 9 can be broken down into its prime factors: 3 x 3. Now, if you're looking for numbers greater than 20 that have 9 as a factor, consider 27, 36, and 45. Each of these numbers neatly fits your criteria of being above 20, and they’re also divisible by 9! For a fun way to remember, why not think of 9 as the “9 club”? Any member of this club will have astonishing properties when you look at its multiples. Grab some paper and pencil, start jotting down some multiples, and before you know it, you'll be amazed at how many numbers sneak in past that 20 barrier—like 54, 63, and beyond!