My series columns, which are characteristic of using "Number", has a theme of "trying explanations about everything in the world", excluding ambiguous talks.

Now I tried to explain about two difficult problems from the viewpoint of mathematics , that is said "Fermat's last theorem" in the diet world,

- partial diet (for example, we can lose only weight of waist)

- turn of partial diet (for example, we have to lose only bust of waist first when we diet)

The other day, I could finish writing and submitting it with relief.

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When I presented my research...calculation results to my senior daughter last night, she suddenly asked me a question.

"Papa. What is "A cup", "B cup" of brassiere eventually ?"

"That means, to tell you the truth, I could know it first in this writing, is a difference between a woman's top bust size and under bust size, and is divided by 2.5cm ..."

"Why does her father explain the definition of brassiere cup to her ?"

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Dear her mother, friends and school administration. I hope that you are going to expand general knowledge, you should show her.