What brings you down but never up?

A patient was diagnosed with some ailment. He was given five different tablets to take at night at an interval of 15 minutes.

How long will it take the patient to consume all the five tablets?

Solve below popular number sequence
314 159 265 358 979 323 846 ?

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

A sea diver is a real show-off. He showed everyone that he can hold his breath underwater for 15 minutes.

I went to the diver and told him that I can be underwater for double the time i.e 30 minutes.
He responded that he will give me 100$ if I would be able to do it. I won 100$.

What did I do?

There is a straight highway. Four different villages lie on that highway. The distance between them is different. The third village is 60km away from the first village; the fourth is 40 km away from the second; the third is 10 km near to the fourth that it is to the second.

Can you calculate the distance between the fourth and the first village ?

What is the coolest letter in the alphabet?

Name the three-letter word that can complete the below words?

A) L O _ _ _ E
B) E D U _ _ _ E
C) _ _ _ E R
D) _ _ _ T L E

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?