What goes up but never comes down?

Why is 6 afraid of 7?

2 ladies and 2 girls need to cross a river in a boat big enough for 1 LADY or 2 girls. How do they do it?

As you can see that fifteen matches have been used to form an arrangement. What you have to do is remove any six of them to make them ten.

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

I am sure no one can have two things for dinner. what are they?

Using Only Five 5's and any mathematical operator make sum as 37

John, Jack and Jill are in a desert. John doesn't like Jill and hence decides to murder him. He poisons the water supply of Jill. Since it is a desert area, Jill must drink or he will die of thirst.

Jack does not know of the actions of John and also decides to murder Jill. To succeed in his ill motives, he removes the water supply of Jill so he dies of thirst.

Jill dies due to thirst. Who murdered Jill?

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

You need to move three matchsticks to form three squares. Can you do it?