There are 25 passengers on the double-decker bus 1 floor, including me. The conductor told me that the passenger volume on the second floor is 40% of 1 building. How many people are there on this bus?

② A monkey picked 100 bananas from the forest and piled them in a pile. The monkey's house is 50 meters away from the banana pile. The monkey is going to take bananas home. He can take up to 50 bananas at a time, but the monkey is greedy. He has to eat 1 banana every time he walks. How many bananas can this monkey take home at most?

If you are asked to roll two dice 24 times and get a "double six", do you think the possibility is greater than 50%?

There are three people: A, B and C.

A said, "I have 1 brother and 3 sisters."

B said, "I have two brothers and two sisters."

C said, "I have three brothers, 1 sister."

In fact, these three people are all brothers and sisters, so how many brothers and sisters are there?

Attach answers ① and 37.

②、25

(3)17th century, Anton Gombo Chevalier de Meyer, a French aristocrat who was keen on gambling, suspected that gambling opportunities were always against him. So he wrote to mathematicians blaise pascal and Pierre de Fermat to tell them his doubts. They found that the probability of a double six winning 24 times is 35/36 to the 24th power, which is about 0.49. This means calling many times.

④、6