Question

the sum of the digits of. a two digit number is 10,when the number is reversed, the number is increased by 72.find the number​

Answer 1

Answer:

19

Step-by-step explanation:

Let the number be "ab"

So 10a + b = 10 ..... (i)

When the number is reversed the new number is ba

So (10b + 10 ) - ( 10a +b ) = 72 ....(ii)

From Eqs. (i) & (ii)

a= 1 and b =9

∴number = 19