Number System
The sum of the numbers is 264. If the first number be twice the second and third number be one-third of the first, then the second number is:
Let the ten's digit be x and unit's digit be y. Then, number 10x + y.Number obtained by interchanging the digits = 10y + x.(10x + y) + (10y + x) = 11(x + y)which is divisible by 11.