Which Number is the odd one out?

A) 7145
B) 2716
C) 5321
D) 4135

You are a cab driver who pools passengers. You pick 3 people from a destination and drop 1 after an hour. 2 people climb aboard at the same time and you drop 3 at the next destination. After some time, you pick 2 passengers only to drop 1 after a short distance where 3 more passengers climb up the cab. You leave the rest of the passengers one by one to their destination and then come back home.

Can you tell the eye color of the cab driver?

Find the value of "?" in the ball picture Riddle below:

How can you tell a raw egg from a hard-boiled egg?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

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?

10+10 and 11+11 can give you the same answer.

Explain how?

A wealthy man lives alone in a small cottage. Being partially handicapped he had everything delivered to his cottage. The mailman was delivering a letter one Thursday when he noticed that the front door was ajar. Through the opening he could see the man's body lying in a pool of dried blood. When a police officer arrived he surveyed the scene. On the porch were two bottles of warm milk, Monday's newspaper, a catalog, flyers, and unopened mail. The police officer suspects it was foul play. Who does he suspect and why?

You see a boat filled with people, yet there isn’t a single person on board. How is that possible?

There are nine letters in the below-given diagram. You have to form a nine-letter word using these letters.