The more of this there is, the less you see. What is it?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

The LCD device should be able to tell the right time in the format HH:MM: SS in a 12-hour format. You can refer to the picture to get an idea. The device is a simple "level indicator" which has to be converted into a watch. How will you program it to work?

The horse jumps over the king.
Strangely there is absolutely no scratch on him.

Can anyone explain, how is this possible?

Replace the question mark with the correct number in the below-given picture?

Can it be possible to build a house that has all its four walls facing towards the South?

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

When is the top of a mountain similar to a savings account?

If you drop a 15 kg iron bar and a 5 kg bag of cotton from a height of 50 meters which will reach the ground first?