Complete Solution:

The special number is 25, which corresponds to the letter y. Yellow is the most common color that begins with y.

If B represents the number of the birth month, each step can be written
as shown in the table below.

 Step Algebraic Representation Take the number of your birth month B Add 32 B + 32 Add the difference of 12 and the number of your birth month B + 32 + (12 – B) Divide by 2 B + 32 + (12 – B) 2 Add 3. B + 32 + (12 – B) + 3 2

The final step can be simplified as follows:

 B + 32 + (12 – B) + 3 2 = (B - B) + (32 + 12) + 3 2 = 0 + 44 + 3 2 = 22 + 3 = 25

Therefore, no matter what number you choose for B, it is added and then subtracted and does not affect the answer. The answer is always 25. The 25th letter of the alphabet is y. The most obvious color beginning with y is yellow.

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