Find the next number in the sequence

5 12 24 36 ?

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

How many times do a clock's hands overlap in a day ?

The below given figure comprises of a pattern through which you can determine the missing letter. Can you push your mind to find the pattern and add the missing letter?

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

The ages of a father and son add up to 66.
The father's age is the son's age reversed.
How old could they be?
(3 possible solutions).

What is black when you buy it, red when you use it, and gray when you throw it away?

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

I go up and I go down.
I go up towards the beautiful sky and down toward the green ground.
I am present tense.
I am past tense too
Children love me.

Who Am I?