The formula to calculate the Kua number is:
\[ \text{Kua Number} = (10 - (\text{Sum of last two digits of birth year} \% 9)) \% 9 \]
\[ \text{Kua Number} = ((\text{Sum of last two digits of birth year} + 5) \% 9) \% 9 \]
A Kua number is a personal number used in Feng Shui to determine auspicious and inauspicious directions for an individual. It is based on the year of birth and gender and can influence various aspects of life, such as health, wealth, and personal growth.
Let's assume the following values:
Using the formula to calculate the Kua number:
Sum of last two digits of birth year: 8 + 5 = 13
\[ \text{Kua Number} = (10 - (13 \% 9)) \% 9 = (10 - 4) \% 9 = 6 \]
The Kua number for a male born in 1985 is 6.
