Traditional Culture Encyclopedia - Traditional festivals - There are five white balls and five black balls in a bag.
There are five white balls and five black balls in a bag.
The probability that 5 balls are of the same color is1126 50 yuan.
The probability of only four black balls is 25/252 20 yuan.
The probability of only one black ball is 25/252 5 yuan.
The remaining probability is-10 yuan for 50/63.
e = 1/ 126 * 50+25/252 * 20+25/252 * 5+50/63 *( 10)=-425/84
Don't take 10 paid by Yuan You as if you didn't get it. It says here that you got-10 yuan. This-10 yuan and 50,20,5 are the same concept.
- Previous article:
What is the meaning of a song, a glance and a half a lifetime, all a treacherous surge?
- Next article:Traditional persimmon processing method
- Related articles
- Determination of total chromium by ammonium ferrous sulfate titration
- There is a glass factory in Dongting Yunlin Chunlei.
- Where is Pingyao Bowls a specialty?
- There are many new ways of shopping.
- 4r Educational Theory Characteristics
- People carve immortals and buddhas to see the spirit.
- Give me a traditional cartoon.
- Skills of making sesame seed cake in furnace
- What is the price of Hua Mu World Huisheng Garden in Rugao?
- Comprehensive analysis and appreciation of afternoon flowers