Solution of problem N4312 probability theory

Solution of problem N4312 probability theory

4312. In the box are 10 white balls and black ones. Take out two balls at random. What is the probability that they are of different colors?

Additional information:

Detailed solution. Decorated in Microsoft Word 2003 (Quest decided to use the formula editor)

Discount for regular customers! If the total of your purchases from the seller Massimo86 exceeds:

• $30 discount 10%
• $20 discount 7%
• $18 discount 6%
• $15 discount 5%
• $12 discount 4%
• $9 discount 3%
• $6 discount 2%
• $3 discount 1%