Our product and our sum always give the same answer. Who are we?

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?

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

People make me, save me, change me, raise me. What am I?

Why do you find that most of the buildings are deprived of the 13th floor?

There is a movie name hidden in the picture that is attached with this question. Can you find out which movie is it?

A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?

It's a protector.
It sits on a bridge.
One individual can see directly through it, while others wonder what it hides.

What is it?