China Naming Network - Company naming - Xiaoqing and Xiao Li took part in the lottery of A, B and C. What is the probability of being drawn in the same competition?
Xiaoqing and Xiao Li took part in the lottery of A, B and C. What is the probability of being drawn in the same competition?
Find the probability. Think of it this way.
The probability of two people participating in events A, B and C is 1/3.
Then the probability of being attracted to the same game a
Of course, it is1/3x1/3 =1/9.
It's equivalent to ABC.
So p = 3×1/3×1/3 =1/3.