Question

The sum of a two digit number and the number obtained by reversing the digits is 66. If the

digits of the number differ by 2, find the number. How many such numbers are there?​

Answer 1

Answer:

Step-by-step explanation:

Let the two digit be x and y

∴ Number (2−digit) =10×x+y

Sum of 2−digit and reverse of it

⟹10x+y+10y+x=66 (given)

∴x+y=6 (equation 1)

Digits differ by 2

∴x−y=2 (equation 2)

On adding,

2x=8

⟹x=4

∴y=2

or, x+y=6 From 1 equation

and y−x=2 From 2 equation

On adding:

2y=8

y=4

x=2

∴ Two digit numbers are: 42 and 24

There are two such numbers.