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

A man has to get a fox, a chicken, and a sack of corn across a river.

He has a rowboat, and it can only carry him and one other thing.
If the fox and the chicken are left together, the fox will eat the chicken.
If the chicken and the corn are left together, the chicken will eat the corn.

How does the man do it?

John was working on a Chemical Mixture whose weight comprise 90% liquid and 10% solid. The total weight of the mixture is 20 pounds. After a while, John noticed that some of the liquid evaporated and now the liquid comprises just 50% of the weight.

What is the weight of the chemical mixture now?

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?

What does this rebus mean?

O
N
C
E
TIME

There was a minor accident with a doctor's son but the doctor noticed no major injury. After the treatment, the father of that doctors son is sitting with the son of the doctor without the doctor being in the room.

How can this be possible?

Optical Illusion: People with hawk eyes can spot a different car in 5 seconds. Can you? Test your vision now!

A number can be multiplied by multiple of nine
i.e 9 18 27 36 45 ...

and the resulting number consist of only one digit.

Can you identify the number ?

What have one eye but still cannot see?

Can you find out a way through which you can make five squares out of the given figure by moving just six match sticks?