What interesting facts about the number 9?
2006-08-02 14:02:07 · 16 answers · asked by Anonymous in Education & Reference ➔ Words & Wordplay
It's a 6 when you turn it upside down.
2006-08-02 14:05:03 · answer #1 · answered by faerie 1 · 2⤊ 0⤋
Nine is a composite number, its proper divisors being 1 and 3. It is 3 times 3 and hence the third square number. 9 is a Motzkin number. It is the first composite lucky number.
In base 10 a number is evenly divisible by nine if and only if its digital root is 9. That is, if you multiply nine by any whole number, and repeatedly add the digits of the answer until it's just one digit, you will end up with nine:
2 × 9 = 18 (1 + 8 = 9)
3 × 9 = 27 (2 + 7 = 9)
9 × 9 = 81 (8 + 1 = 9)
234 × 9 = 2106 (2 + 1 + 0 + 6 = 9)
578329 × 9 = 5204961 (5 + 2 + 0 + 4 + 9 + 6 + 1 = 27 (2 + 7 = 9))
482729235601 × 9 = 4344563120409 (4 + 3 + 4 + 4 + 5 + 6 + 3 + 1 + 2 + 0 + 4 + 0 + 9 = 45 (4 + 5 = 9))
2006-08-02 14:07:01 · answer #2 · answered by Anonymous · 0⤊ 0⤋
There are 9 justices on the United States Supreme Court.
When doing multiplication tables, there are interesting results with the number 9. For example 9 x 2 = 18. 9 x 9 = 81 (numbers reversed). 9 x 3= 27 9 x 8 = 72!
There are 9 innings in a baseball game!
The "character" 99 from "Get Smart" was beautiful and smart!
9 is divisible by 3 and 6. (6 is 9 upside down).
I can probably think of more, but it's getting late- it's past 9 pm where I live! ;)
2006-08-02 14:09:39 · answer #3 · answered by Malika 5 · 0⤊ 0⤋
It's the last single digit number.
It is the first odd number resulting from squaring a prime number.
Without nine, ten wouldn't exist.
Adding the first four counting numbers together makes nine.
Nine is a square number and a triangular number.
2006-08-02 14:09:28 · answer #4 · answered by powhound 7 · 0⤊ 0⤋
Y Dr.Education Wanna Know He Should Be Educated
2006-08-02 14:05:40 · answer #5 · answered by nicnoo23 4 · 0⤊ 0⤋
Lots of "old sayings" with the #9
Dressed to the nines
On cloud nine
Possession is nine points of the law
The whole Nine yards
Working nine to five
The atomic number for Fluorine is 9
There are 9 planets in our solar system
2006-08-02 14:14:18 · answer #6 · answered by Linda 6 · 0⤊ 0⤋
thats the number that made 6 cry, because 7 8 9 (seven ate nine)
2006-08-02 14:05:29 · answer #7 · answered by Anonymous · 0⤊ 0⤋
It's "enin" backwards?? lol that has nothing to do with anything.
Hmm interesting facts about the number 9....two of them is one less than 100. :) there.
It is an upside-down 6.
2006-08-02 14:05:52 · answer #8 · answered by miss_gem_01 6 · 0⤊ 0⤋
you can use your fingers to determine it's multiples....hold your hands up, palms facing you (thumb on the far right, thumb on the far left)...you put the finger down of the number you are multiplying by nine....example, if you want to do 9 x 1 you would hold down your thumb on the left hand....you will then have 9 fingers still facing you on the right of that finger....so 9x1=9....if you want to do 9x6...with your palms facing you, you put your 6th finger down (which would be your right hand pinky finger)...you have 5 fingers still up on the left of that finger and 4 fingers still up on the right of that finger...therefore 9x6 = 54....it is easier to show than tell...but this is a cool fact about 9....
2006-08-02 14:11:24 · answer #9 · answered by TJ 4 · 0⤊ 0⤋
There are 9 members in the Wu Tang Clan
2006-08-02 14:05:47 · answer #10 · answered by Anonymous · 0⤊ 0⤋
The number of players on a baseball team.
2006-08-02 14:05:44 · answer #11 · answered by Scndson 1 · 0⤊ 0⤋