Hello everyone, thank you for the invitation. Today I will share with you the problem of the formula for conceiving boys and girls, as well as some confusions about the formula for distinguishing boys and girls. If you still don’t understand it, It doesn’t matter, because I will share it with you next. I hope it can help everyone and solve everyone’s problems. Let’s get started!
Contents of this article
- The ratio of men to women in the world
- Formula to classify boys and girls
- How to calculate boys and girls by month
1. The ratio of men to women in the world
1. Human beings are not born with boys or girls. The probability is purely 1 to 1. Due to the different moving speeds and weights of X and Y sperm, it is easier for Y sperm to win and fertilize the eggs. Therefore, demographers believe that the normal population ratio of newborns is about 105. Demographically speaking, The general normal range is between 102 and 107. Higher or lower than this number, environmental, social, medical and other factors may be hidden behind it.
2. However, because the survival rate of baby girls is higher than that of baby boys, and women live longer than men, and men are more likely to die due to work, health habits, and living habits death due to other factors, so the sex ratio of the overall population is mostly below 100. The older the country is, the better the living environment is. Because the population of older women is increasing, the sex ratio is also lower.
3. The ratio of the number of males to the number of females in the population. It is usually expressed as the number of males per 100 females. The calculation formula is:
4. Population sex ratio = (Number of males ÷Number of females) × 100%
5. According to different statistical objects, the population sex ratio can be divided into the following types.
6. Gender ratio of the total population; the statistical object is the total population.
7. Sex ratio at birth: The statistical object is babies at birth. The calculation method is:
8. Sex ratio at birth = number of boys born in a certain year ÷ number of girls born in that year × 100%
9. Sex ratio at birth is also called the secondary sex ratio. The primary sex ratio is the sex ratio when the embryo is formed.
10. Infant sex ratio: The statistical object is infants who survive within 1 year of age. The calculation method is:
11. Infant sex ratio = number of boys under 1 year old at a certain point in time ÷ number of girls under 1 year old at that point in time × 100%
12. Gender ratio of population at marriage age: The statistical object is the population that has reached the legal age for marriage. The population of our country is 22 years old for men and 20 years old for women. The gender ratio at marriage is also called the third gender ratio.
13. Sex ratio of death population: The statistical object is the entire population that died in a certain year or a certain period.
14. Population sex ratio by age group: The statistical object is the population of each age group or the population of each age group.
2. Formula for distinguishing men and women
1. (2) One year old and two months, two years old and one month, first half of the month: boy.
2. (3) One year old and two months, two years old and one month, the second half of the month: boy (but the error is larger).
3. Note: month refers to the lunar month in which the first day of the last menstrual period before pregnancy falls, and age refers to the first day of the last menstrual period before pregnancy. The virtual age of heaven and earth.
4. Calculation formula: The mother\’s age is placed on the upper and lower lines respectively, and the number of months of conception is placed on the middle line to form a hexagram.
5. Upper (father\’s age): odd even odd odd even odd even
6. Middle (the month of conception): odd odd even even odd odd even even
7. Lower (mother’s age ): odd number odd number odd number even number even number even number even number
8. Bagua (hexagram image): Qian Gua Dui Gua Li Gua Zhen Gua Xun Gua Kan Gua Gen Gua Kun Gua
9. ShengBoys and girls (reference): boy girl girl boy girl boy boy girl
10. For example: the father\’s age is an odd number placed above it is Yang Yao, and the mother\’s If the age is an even number and is placed at the bottom, it is the Yin Yao. If the month of conception is the first month, and the odd number is the Yang Yao and is placed in the middle, then the composed hexagram is – Yang, Yang, Yin. If it is a Sunda hexagram, it means a girl is born. .
3. How to calculate boy or girl by month
1. Pregnancy Multiply the double of the lunar month + the lunar birthday month of the pregnant woman – the imaginary age at the time of pregnancy + 19 =, and the result is that if the number ends in an odd number, it is a boy, and if the number ends in an even number, it is a girl.
2. Example: The month of pregnancy is June of the lunar calendar, the pregnant woman\’s birthday month of the lunar calendar is July, and the imaginary age is 29 years old. The calculation method for a boy or a girl is 6×6+7-29+19=33. If the result has an odd number at the end, it means it is a boy.
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