You have an empty wine bottle with a cork that has been secured at the top in a normal way. There is a metal ring inside the bottle that is suspended by a string.

How can you make the metal ring drop to the bottom if you are not allowed to touch anything - not the bottle, not the cork, not the thread and not the ring?

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

Can you replace the question mark with the correct number in the below table sequence?

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

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?

Can you find the key in the picture below?

Can you find the least possible number such that

If the number is divided by 3, it gives the remainder of 1;
If the number is divided by 4, it gives the remainder of 2;
If the number is divided by 5, it gives the remainder of 3;
If the number is divided by 6, it gives the remainder of 4.

If a wheel has 54 spokes, how many spaces are there between the spokes?

You can see it everyday, But cannot touch it at will. What is it?