Mikołaj’s riddle: Chris has his eyes covered. In front of the boy in the basket there are 7 red apples and 13 green apples. What minimum number of apples must Chris take to make sure that two of them are the same colour?

Krzysztof's riddle: Which of the actions is first: multiplication or division?

Kinga’s riddle: How many times can you subtract 5 from 25?

Amanda's riddle: The sum of three numbers is 42. The difference between the two smallest is 6, and their sum is 4/3 of the largest number. What three numbers meet these conditions?

Tymon ’s riddle: How many nines are there between 1 and 100?

Weronika’s riddle: At work, Max is to write numbers on houses on Flower Street. He has to prepare numbers from 1 to 100. How many times will he write the number 8?

Kacper’s riddle: Take two numbers, such that the square of the first, plus the square of the second, shall equal 8; while the first, plus the product of the first and second, shall equal 6. What are the two numbers?

Igor’s riddle: Janusz found 20 pounds, but he has 30 now. How?

Adam's riddle: What is heavier: a kilogram of feathers or a kilogram of apples?

Szymon's riddle: Antek has 119 zlotys, Wiktor has 67 zlotys less than Antek, and Szymon has 5 times more than Wiktor.

How much money do boys have together?