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How the Birthday Guessing Game Works

Author: tonagaiExecutions: 78929
TOP/Shared Formulas (Life)/Games

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Please calculate the number obtained by multiplying the month of birth by 4, adding 9 to that result, multiplying the whole thing by 25, and then adding the day of birth to that result.
Once you know that number, you’ll know the birthday.
Principle: If we let x represent the month and y represent the day, we are essentially calculating (4*x+9)*25+y, which is equivalent to
(100*x+y)+225, right?
The month you were born
month(s)
Your Date of Birth
day(s)
What happens if you multiply your birth month by 4? 
What happens if you add 9 to that? 
What happens if you multiply that by 25? 
What if you add your birthdate to that? This is the response you’ll receive.
(To get the answer) What happens if you subtract 225? I'll do the subtraction myself.

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