What brings you down but never up?

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?

It is a six-letter word.
The first four letters are me.
The second and last letters are the same.
The fourth second and last letter is payment.

Who is it?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

What does below Rebus mean ?

esgg sgeg gegs gsge

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

Count the number of balls in picture below:

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

What is the next number in this matchsticks series riddle?

What Deficiency does the below rebus represent?

VIT_MIN