I am white when I am dirty, and black when I am clean. What am I?

Two friends decide to get together; so they start riding bikes towards each other. They plan to meet halfway. Each is riding at 6 MPH. They live 36 miles apart. One of them has a pet carrier pigeon and it starts flying the instant the friends start traveling. The pigeon flies back and forth at 18 MPH between the 2 friends until the friends meet.

How many miles does the pigeon travel?

A cricket has 6 legs, a squirrel has 4 legs and a spider has 8 legs.

In a local zoo, it was found that the total number of legs is 612. Also, there are equal number of each of the above animals/insects.

Can you find out how many animals are there in the zoo?

Baseball bat and ball cost $100. If the bat cost $99 more than the ball, what is the cost of each?

I taste better than I can smell. Who am I?

What begins with T, ends with T, and has T in it?

Name a key which is hardest to turn.

By moving exactly three matchsticks can you make the below equation true.It can be solved by 3 ways.

Find out which of the given views in the picture is accurately the top view of the given pyramid.

There was a strange boy who was born before his father. How can this be possible?