Where Do You Live?
Ask someone to follow these steps:
1. Double your house number.
2. Add the number of days in a week.
3. Multiply by 50.
4. Add your age.
5. Subtract the number of days in a year.
6. Add 15.
The tens and units digit of the answer are her age; the other digits are her house number.
From Surinder Kumar DRP Maths Pathankot