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?

You can take four of the five letters out of this word, but the pronunciation never changes. What is the word?

What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

What is greater than gold but cannot be bought. it can never be sold and can earn if its sought. though it can be broken, it can still be fixed. for by birth it can't start nor by death it is ended.what am i?

Your job is to measure 45 minutes if you have only two cords and matches to light the cords.

1. The two cords are twisted from various materials, so their different segments can burn at different rates.
2. Each cord burns from end to end in exactly one hour.

Describe your way of measuring the 45 minutes.

What breaks yet never falls, and what falls yet never breaks?

Replace all '*' with digits 1, 2, 3, 4, 5 and 6 to make below statement true.

* *
x *
=====
* * *

How far can you walk into the woods?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

A man lives on the fifteenth floor of an apartment building. Every morning he takes the elevator down to the lobby and leaves the building. In the evening, he gets into the elevator, and, if there is someone else in the elevator, or if it was raining that day, he goes back to his floor directly. Otherwise, he goes to the tenth floor and walks up five flights of stairs to his apartment. Can you explain why he does this?