Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

No one wants to have it, but if one got it, he does not want to lose it. What is It?

How many bananas can you eat if your stomach is empty?

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

You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?

What kind of band never plays music?

The doctor prescribed you to take one pill from the bottle every half an hour. The bottle is now left with only three pills.

How long do you think you have before you run out of pills?

You measure my life in hours
I serve you by expiring
I vanish faster when I am thin
and slower when I am thick
The wind is my energy
What am I?

How many words can a quill made with the feather of a pigeon write with a 100ml bottle of black ink?

How many triangles can you count in the figure given?