At a taxi company, there are currently 20 white, 6 black, and 4 grey cars available. One of the cars is dispatched, randomly being the closest to the customer. Find the probability that a black taxi arrives.

Feruz and his father decided to ride a Ferris wheel. There are 20 cabins in total: 3 blue, 10 green, and the rest are red. The cabins come to the boarding platform one by one. Find the probability that Feruz rides in a red cabin.

There are 50 exam tickets. Aziz has not learned 9 of them. Find the probability that he gets a ticket he has learned.

The parents’ committee bought puzzles as gifts for the children at the end of the year: 8 with cars, 10 with city views, and 6 with cartoon characters. The gifts are distributed at random. Find the probability that Malika gets a puzzle with a cartoon character.

Before a match, the referee tosses a coin to determine which team starts with the ball. Pakhtakor is to play two matches in a row: first against Nasaf and then against Bunyodkor. Find the probability that Pakhtakor gets the first possession in both matches.