Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?

Can you name some countries which do not have the alphabet 'A' in them?

It's a protector.
It sits on a bridge.
One individual can see directly through it, while others wonder what it hides.

What is it?

Who always enjoys poor health?

Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?

John speaks the truth only once a day in a week. Below are a few hints for you:

First: Days are Sunday, Monday and so on.
Second: One day he says, "I lie on Monday and Tuesday".
Third: On the next day, he says, "Today is either Thursday, Saturday or Sunday".
Fourth: On the next day, he says, "I lie on Wednesday and Friday".

Can you identify the day on which he speaks the truth?

I am first found in caves, now prolific online; I am a depiction, a drawing, a symbol, or sign. I will convey whichever mood you could wish; or for that matter, a fist, flask, or fish. What am I?

I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?

Which fur should we be getting from the Lion?