Solution of problem N4689 probability theory

Solution of problem N4689 probability theory

4689. For each lottery ticket with probability p1=0.15, a big win can fall, with probability p2=0.15, a small win, and with probability p3=0.7, the ticket can end up without a win. Bought n=15 tickets. Determine the probability of getting n1=2 big wins and n2=1 small ones.

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%