Question

2. In the year 2000, I will be as the sum of th
e digits of my birth year when I was born​

Answer 1

Given  : In the year 2000,  I will be as the sum of the  digits of my birth year

To Find :  when I was born​

Solution:

Year would be 19XY

Sum of Digits  = 1+ 9 + X + Y  = 10 + X + Y

Age = 2000 - 19XY

= 2000 - 1900 - 10X - Y

= 100 - 10X - Y

 10 + X + Y =  100 - 10X - Y

=> 11X + 2Y =  90

X = 8  ,  Y  = 1   only satisfy this

Born in 1981  Years

Age = 19 years , Sum of Digits of year in which born = 19

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