When monkey rotate the gear, which mark will be hit 1 or 2 ?

A man stands on one side of a river, his dog on the other. The man calls his dog, who immediately crosses the river without getting wet and without using a bridge or a boat. How did the dog do it?

In the image below, you can see two glasses and two matchsticks.You need to move four matchsticks in such a manner that the crosses come inside the glasses. Note: you cannot move the crossed.

What is the next number in this series?

4,12,84,3612....

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

Can you find out a way through which you can make five squares out of the given figure by moving just six match sticks?

Which number should replace the question mark?

Imagine you are in a room with no windows or doors. How will you get out?

Bay of Bengal is in which state?

I have thought of a number that is made up by using all the ten digits just once. Here are a few clues for you to guess my number:

First digits is divisible by 1.
First two digits are divisible by 2.
First three digits are divisible by 3.
First four digits are divisible by 4.
First five digits are divisible by 5.
First six digits are divisible by 6.
First seven digits are divisible by 7.
First eight digits are divisible by 8.
First nine digits are divisible by 9.
The number is divisible by 10.

Can you find out the number ?