Find the missing letter in the last circle logically in the given below picture.

What does this rebus picture identify?

A mile-long train is moving at sixty miles an hour when it reaches a mile-long tunnel. How long does it take the entire train to pass through the tunnel?

Identify the next two numbers in this series.

101, 112, 131, 415, 161, 718, ???, ???

Can you decipher these quotes by Albert Einstein?
Blf xzm mvevi hloev z kilyovn lm gsv ovevo lm dsrxs rg dzh xivzgvw.

There is something which you can be arrested for attempting but not for successfully completing.

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

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

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

If an earthquake is 1 point higher on the Richter Scale than another earthquake which is actually 10 times stronger, how much stronger would an earthquake be if it was just half a point higher on the Richter scale?