What is always in front of you but can’t be seen?

Which is Odd One Out and why?

4377

3954

9862

8454

9831

The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?

What does below rebus means ?

Which statement is true out of the following?
One statement here is false.
Two statements here are false.
Three statements here are false.

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

I came first on earth but second on the heaven.
I also came twice in a week but found just once in a year.
I stay away from months but you can find me in February.

What am I?

Eight of us go fourth, not back, to protect our king from an attack. What are we?

A bomb goes off.
Carnage.
One person, only a few feet away, survives! How can this be?

In Greek mythology, the Sphinx sat outside of Thebes and asked this riddle of all travellers who passed by. If the traveller failed to solve the riddle, then the Sphinx killed him/her. And if the traveller answered the riddle correctly, then the Sphinx would destroy herself. The riddle:

What goes on four legs in the morning, on two legs at noon, and on three legs in the evening?

Oedipus solved the riddle, and the Sphinx destroyed herself.