A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

A and B have a certain number of chocolates with them. If B gives one chocolate to A, they will have an equal number of chocolates. But if A gives one chocolate to B, then A will be left with half the number of chocolates that B has.

Can you find out the number of chocolates they have right now?

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?

Can you write down eight eights so that they add up to one thousand?

In the image given, you can find several triangles. Can you count them all?

An office is divided into 8 cubicles. How many of the cubicles are painted if only 1/8 of the cubicles are painted?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

It has a long neck, A name of a bird, Feeds on cargo of ships, It's not alive,

What is it?

If a zookeeper had 100 pairs of animals in her zoo, and two pairs of babies are born for each one of the original animals, then (sadly) 23 animals don’t survive, how many animals do you have left in total?

Can it be possible to build a house that has all its four walls facing towards the South?