How many times can you subtract the number two from the number fifty?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

He does not have any heart but still, He manages to live.
If you kill him, you will eventually die but yet you kill him.
He cannot run, who is He?

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?

Begin with a word, five letters to my name,
Remove the first and last but I am the same
Take out my middle and still, I remain.
What word am I?

A wooden log balances equally on the scales when weighed with three-quarters of a pound and three-quarters of a wooden log.

Can you calculate the weight of the entire wooden log?

Two in a corner, one in a room, zero in a house, but one in a shelter. What is it?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

In an interview, a boy was asked an unusual question 'How two persons sitting with a table in between them can't see each other?' He was unable to reply. Can you?

A man and a dog were going down the street. The man rode, yet walked. What was the dog’s name?