A boy was locked in a room by some robbers. All that is in the room is a piano, a calendar, and a bed. The room is locked from the outside. What does he eat, drink, and how does he escape and get out?

Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

what's the probability of getting a king or a queen from a pack of 52 cards?

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

What do you call a fish without an eye?

Can you find out the smallest number that can be conveyed as the sum of three squares in three unique ways?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

Suppose we lay down two cups in front of you. One of the cups is filled with tea and the other one with coffee. Now we ask you to take a spoonful of tea and mix it with the coffee. At this moment, the coffee cup has a mixture of tea and coffee. You have to take that mixture (spoonful) and add it back to the tea.

Can you now tell if the cup of coffee has more tea or the cup of tea has more coffee?