The driver of a long-range truck looked at the instruments of his car and saw that the speedometer shows 25952. "What a beautiful number I drove. Probably, the next beautiful number will not fall out soon," he thought. However, after an hour and twenty minutes, the following beautiful number appeared on the speedometer. How fast was the truck going?

📜 Leaflet #time

There are two hourglasses: one for 5 minutes and one for 8 minutes. How can they be used to time 7 minutes?

📜 Leaflet #time

Cut the dial into two parts so that
1) the sum of the numbers in each part was the same;
2) the sum of the digits in each part was the same.

📜 Leaflet #time

How many times a day do the hands of the clock form a right angle?

📜 Leaflet #time

Lucas's alarm clock is ruined: he is in a hurry for 4 minutes an hour. At 7 p.m., Lucas set the exact time on it and set the call to 7 a.m. What time will Lucas wake up?

📜 Leaflet #time

James has 10 sticks 50 cm long. He wants to cut them so that 50 sticks with a length of 10 cm are obtained.
How many cuts will he have to make?

📜 Leaflet #different

In a 7×7 square, paint over several cells so that there are exactly three painted cells in each row and in each column.

📜 Leaflet #different

How many three-digit numbers have 0 as the middle digit?

📜 Leaflet #different

On an island of knights and liars (knights always tell the truth and liars always lie) in some company each declared to the others: "There are two knights among you."
How many knights could there be in this company?

📜 Leaflet #different

The store sells chocolate in the form of letters of the English alphabet. The same letters have the same price, and different ones have different prices. It is known that the word ONE costs $6, the word TWO costs $9, and the word ELEVEN costs $16.
How much does the word TWELVE cost?

📜 Leaflet #different

Lucas borrowed $19 from James, pledging to return it within 4 months. Moreover, every month the amount of payment should grow, amount to an integer number of dollars and be completely divided by the amount of payment in the previous month.
How much will Lucas pay in the last month?

📜 Leaflet #different

Find the largest natural number, any two consecutive digits of which form an exact square.

📜 Leaflet #different

Winnie-the-Pooh and Piglet came out of their houses to meet each other and met 2 minutes later. After what time will Piglet come to Pooh's house if the speed of Winnie-the-Pooh is twice the speed of Piglet?

📜 Leaflet #going_apart

Winnie the Pooh came out of the guests from Christopher Robin 1 minute later than Piglet. After what time will he catch up with Piglet if his speed is twice the speed of Piglet?

📜 Leaflet #going_apart

Tigger and Winnie the Pooh went to visit Christopher Robin. At first Tigger ran twice as fast as Winnie-the-Pooh, but after half the way, he suddenly got tired and crawled the rest of the way at half the speed of Winnie-the-Pooh. Who met Christopher Robin first, Tigger or Winnie the Pooh?

📜 Leaflet #going_apart

Tigger knows how to run at 30 kilometers per hour and really wants to learn how to spend one less minute per kilometer. At what speed should Tigger learn to run?

📜 Leaflet #going_apart

Stubborn Winnie the Pooh decided to walk to the North Pole. At 12 o'clock Christopher Robin caught up with him on his bicycle and drove him to the place where it was the same distance to the North Pole as Winnie had already walked. Winnie-the-Pooh was at the North Pole at 14 hours. How long will it take Winnie the Pooh to get back on foot if you know that he was carried on a bicycle at twice the speed he walks?