In a boat, the father of a sailor's son is sitting with the son of the sailor. However, the sailor is not present on the boat.

Can this even be possible?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

Why do we preferably have round manhole covers and not square ones?

Given that

(78)^9 = 6
And (69)^4 = 11

Can you find out

(99)^2 =?

(Note: This is Logical, not Mathematical)

You have a basket containing ten apples. You have ten friends, who each desire an apple. You give each of your friends one apple.
Now all your friends have one apple each, yet there is an apple remaining in the basket.
How?

What time is it when an elephant sits on a fence?

A person is found murdered in his Chamber. When the crime scene is investigated, the Investigator find out that there is a calendar on which the victim has written a few numbers with his blood. The numbers are 4, 11, 11 and 4.

There are four suspects in the murder, John, Jacob, Anna and Lee. Can you find out who is the murderer?

A word I know has six letters it contains, remove one letter and 12 remain. What is it?

I can be made.
I can be cracked.
I can be told.
I can be played.

Who am I?