Question

sum of the digits of a two digit number is 12. If the digits are same what are the numbers​

Answer 1

Answer:

Step-by-step explanation:

Let the digit at the tens place be x and the digit at the unit place be y.  

x+y=12  (1)

Required Number = (10 x+y).

Number obtained on reversing the digits = (10 y+x).

According to the condition, we get

(10 y+x)−(10 x+y)=18

→ 9 y−9 x=18

→   y−x=2     (2)

Adding (1) and (2), we get

2 y=14 →y=7

→ x= 12 - 7 = 5

Hence, the required number is 57.