45,000 / 5 = 9,000
45,000 / 9 = 5,000
The greatest four-digit number is 9999. To find the largest four-digit number divisible by nine, we can check if 9999 is divisible by nine by summing its digits: 9 + 9 + 9 + 9 = 36, which is divisible by nine. Therefore, the greatest four-digit number that is divisible by nine is 9999 itself.
A 4-digit number divisible by both 5 and 9 must be divisible by their least common multiple, which is 45. To find a 4-digit number divisible by 45, we need to find a number that ends in 0 and is divisible by 45. The smallest 4-digit number that fits these criteria is 1005 (45 x 22 = 990, and adding 15 gives us 1005).
144 is divisible by 12 and 9.
900000
No. Nine is not evenly divisible by five.
The greatest four-digit number is 9999. To find the largest four-digit number divisible by nine, we can check if 9999 is divisible by nine by summing its digits: 9 + 9 + 9 + 9 = 36, which is divisible by nine. Therefore, the greatest four-digit number that is divisible by nine is 9999 itself.
A 4-digit number divisible by both 5 and 9 must be divisible by their least common multiple, which is 45. To find a 4-digit number divisible by 45, we need to find a number that ends in 0 and is divisible by 45. The smallest 4-digit number that fits these criteria is 1005 (45 x 22 = 990, and adding 15 gives us 1005).
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