Replace the question mark with the correct number.

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?

What's a single-digit number with no value?

What is the largest number you can write with just 3 digits?

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

On a windy rainy night , I was driving in my car.
When i reach the bus stand , i see three people waiting for the bus.

1. An old lady who needs an immediate medical attention
2. My Best Friend
3. Girl whom i love from childhood

My car is a two seat, so can you tell me , what i have done in this situation ?

I have Rs.50 and I spend it in the way as below.

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?

What is red and smells like blue paint?