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

What will be the best approach to finding all the prime numbers less than 75 that leave an odd reminder when we divide them with 5?

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

There was a blind man. He had four socks in his drawer either black or white. He opened it and took out two socks. Now the probability that it was a pair of white socks is 1/2.

Can you find out the probability that he had taken out a pair of black socks ?

The more of this there is, the less you see. What is it?

You are given a cube that is made with the help of 10x10x10 smaller cubes summing up to a total of 1000 smaller cubes. You are asked to take off one layer of the cubes.
How many remain now?

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

A Car driver was heading down a street in Washington. He went right past a stop sign without stopping, he turned left where there was a 'no left turn' sign and he went the wrong way on a one-way street. Then he went on the right side of the road past a cop car. Still, he didn't break any traffic laws. Why not?

Alpha is Beta's sister.

Gamma is a Beta mother.

Delta is Gamma's father.

Tango is Delta's mother.

Then,

How is Alpha related to Delta?

What happened when the wheel was invented?