What is the next number in this series?

4,12,84,3612....

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?

Decode this picture on T-Shirt and tell what it says ?

'S' refers to the number of seconds in a day and 'H' refers to the number of hours in ten years. Which quantity out of these two is greater?

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

An American nightclub called 'The Coconut Grove' had a terrible fire in which over 400 people died. A simple design flaw in the building led to a high death toll. Subsequently, regulations were changed to ensure that all public buildings throughout the country eliminated this one detail, which proved deadly. What was it?

What is the word or phrase?

What number comes next in this sequence:
7 8 5 5 3 4 4 _

Can you find out the remainder when 3^300 is divided by 5?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?