What is the formula of the accuracy rate of boys and girls 100?

The formula for giving birth to boys and girls. 49 +? Pregnancy month (lunar calendar-mother's age when pregnant+19=XX, mantissa is single, it is a boy; The mantissa is double, and it is a girl. The pregnant month is June of the lunar calendar, the pregnant woman's birthday month is July, and the nominal age is 29 years old. The calculation method of boys and girls is 49+7-29+ 19=46, and the mantissa is double.

Formula: the second square of the lunar month of pregnancy+the lunar birthday month of pregnant women-the empty age of pregnancy+19 = the mantissa is only one boy; The mantissa is a girl, the month of pregnancy is July of the lunar calendar, the month of pregnant women's birthday is July, and the nominal age is 29 years old. The calculation method of giving birth to a boy and a girl is 7X7+7-29+ 19=46, and the mantissa is double.

Jane said:

Formula 68+ lunar month of pregnancy-the nominal age of the mother at the time of pregnancy =, and the mantissa is single, which is a boy; The mantissa is double. It is a girl. In fact, there are many folk methods to calculate the number of boys and girls, similar to formula 49. In addition, there are some ways to calculate the birth of boys and girls, similar to the watch of the Qing Dynasty, or by the date of birth of parents.

There are many people who generally use it, but we should pay attention to it. In fact, most of these formulas are algorithms without scientific basis. It is best to keep a good attitude when judging the sex of the fetus, and don't affect the mood of pregnant women because of the results.