45,000 / 5 = 9,000
45,000 / 9 = 5,000
You just need a 4 digit number divisible by 5x9 ie by 45, so 4500 will do.
144 is divisible by 12 and 9.
900000
Nine-hundred ninety-eight. 998. It's divisible by two, so it's even, and a three digit number.
No. Nine is not evenly divisible by five.
You just need a 4 digit number divisible by 5x9 ie by 45, so 4500 will do.
144 is divisible by 12 and 9.
144
108
900000
987652431
Numbers that are co-prime won't both be 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
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.
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.
There are many possible solutions. One such is 132486970
Nine-hundred ninety-eight. 998. It's divisible by two, so it's even, and a three digit number.