let x = first digit and y = second digit
since the first digit is in the tens column,
10x + y = 3(x + y)
7x = 2y
x = 2/7 y
since x and y are less tahn 1o and each are whole numbers,
y = 7
x = 2
Ans: 27
Eighteen
27
2
18. The sum of its digits is 9. And yes, it is unique.
-4
27 2+7=9 9x3=27
I am a 3 digit number divisible by 7 but not 2 the sum of my digits is 4 what number am I
-8
81...........
It is 58.
1
To find the digit sum of a number you plus the first 2 numbers together, example:the number 18, 18 is made up of 2 digits 1 and 8.If you add the 2 digits together you get a total of 9.So that is the digit sum of 18.But if you use a higher number like 66 then the method has a small change.First if you add the two digits together it becomes 12.But 12 isn't a single digit sum.So again the 2 digits have to be added together to make a single digit sum.1+2=3 so 3 is the single digit sum for the number 66.