What has many keys but can’t open a single lock?

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 know a nine-letter word having only one vowel.
Do you ?

Your last good ping-pong ball fell into a narrow metal pipe embedded one foot deep in concrete.
How can you get it out undamaged, if all the tools you have are your tennis paddle, shoe laces, and plastic water bottle, which does not fit into the pipe?

Replace the question mark with the correct number in below Picture:

How can you leave a room with two legs and return with six legs?

What has one letter and starts with an E?

Can you solve this picture maths equation?

O_er_t_o_

Complete the missing letters of the given word.

There was a blind beggar living on the footpath of a street. Suddenly one day, the beggar's brother died. What was the relation of the blind beggar with the person who died?

PS: Brother is not the answer.