45,000 / 5 = 9,000 45,000 / 9 = 5,000
144 is divisible by 12 and 9.
Numbers that are co-prime won't both be divisible by nine.
The trick to this question is to realize that you can tell a number is divisible by nine by observing whether the sum of it's digits is divisible by nine.For example, we know that the number 25731 is divisible by nine, because 2 + 5 + 7 + 3 + 1 = 18, and 18 is divisible by nine.So in this case, what we want is a value for "A" in which 3 + A + A + 1, or 2A + 4, is divisible by 9. "A" also has to be less than ten (as we're dealing with a specific digit). That leaves us with only one possible digit, 7. 3 + 7, + 7 + 1 = 18, and 18 is indeed divisible by nine, so we know that 3771 is also divisible by nine.
Yes, it is. One way to tell if a number is divisible by nine is to add up all of the numbers until you get a one digit number, and if the number isn't nine, the number isn't divisible by nine. 4+8+6+0= 18 1+8=9
There are many possible solutions. One such is 132486970
This is a weekly question posted by Columbus State University. See http://www.colstate.edu/mathcontest/problem.php?CategoryID=3&LinkID=CurrentPlease do not answer this question as this person is too lazy to figure it out themselves.
No. Nine is not evenly divisible by five.
A five digit number with 9 is 99999. A number which is 1000 times larger (not 1000 times as large) is 99999000.
A delectable number has nine digits, using the numbers 1-9 once in each digit. The first digit of a delectable number must be divisible by one. The first and second digits must be divisible by two, the first through third must be divisible by three, etc. There has only been one delectable number discovered: 381654729.
Yes, to test for divisible by 9: add the digits together [2+3+4+0=9]. If the sum equals nine, or a number divisible by nine, then the original number is divisible by nine. Example: 4752; 4+7+5+2 = 18, which is divisible by 9. If you're not sure, 1+8=9. You can always keep adding the digits together, and eventually you'll be left with a single digit number. If the sum is equal to 9, then the original number is divisible by 9.
Nine-hundred ninety-eight. 998. It's divisible by two, so it's even, and a three digit number.
81,818,180 of them.
Any number whose digits do not add up to 9, 18 or 27. There are 800 of them!
There are 278 5-digit numbers less than 20,000 that are divisible by both four and nine.
Here are all of them: 18, 27, 36, 45, 54, 63, 72, 81, 90 and 99.
8 8982/9 = 998
900 It is the only three digit number with a nine in the numbers place
One such number would be 3 x 5 x 9 = 135.