You have two strings whose only known property is that when you light one end of either string it takes exactly one hour to burn. The rate at which the strings will burn is completely random and each string is different.

How do you measure 45 minutes?

In a guessing game, five friends had to guess the exact numbers of apples in a covered basket.
Friends guessed 22, 24, 29, 33, and 38, but none of the guesses was correct. The guesses were off by 1, 8, 6, 3, and 8 (in random order).

Can you determine the number of apples in a basket from this information?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

A game is being played where eight players can last for thirty-five minutes. Six substitutes alternate with each player in this game. Thus, all players are on the pitch for the same amount of time including the substitutes.

For how long is each player on the pitch?

Find the missing number in the image below.

If your uncle’s sister is not your aunt, what relation is she to you?

In a school, there are four subjects. Seventy percent of students study English, seventy five percent of students study Science, eighty five percent of students study Mathematics and eighty percent of students study Spanish.

Can you calculate the percentage of students that study all four subjects?

A newspaper is supposed to have 60 pages, but pages 24 and 41 are missing.
Which other pages won't be there?