A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?

If two's company, and three's a crowd, then whats four and five ?

What question can you never answer yes to?

Something Extraordinary happened on May 6th 19778 at 12:34am what was that?

The captain of a ship was telling this interesting story: "We travelled the sea far and wide. At one time, two of my sailors were standing on opposite sides of the ship. One was looking west and the other one east. And at the same time, they could see each other clearly." How can that be possible?

Next Number in the Series,

5, 16, 49, 104, ?

13 decks of cards have been mixed. What is the minimum number of cards that must be taken out from the above-mixed cards to guarantee at least one 'four of a kind?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

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?