What does this Rebus Picture mean?

Solve the equation in the image by looking at the pattern closely.

I travel all around the world but always stay in the corner. What am I?

A father's child, a mother's child, yet no one's son.

Who am I?

What building has the most stories?

Whats the next number in the below number sequence pattern.

You can win me and lose me but never buy me
You can not eat me and never want to part with me
I can make you cry or bring you joy
I am not a machine and definitely not a toy
You keep me but i am not forever just yours
You might find me in a case or on a shelf next to a vase
I am hard and i am tall if you bump me i am sure to fall
I am made of different materials and am at many events
If your lucky and fight hard I might be yours
What am I ?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

What word is represented by this rebus?

A non-stop marathon is the shared favourite sport of three brothers.

*The oldest one is fat and short and trudges slowly on.
*The middle brother's tall and slim and keeps a steady pace.
*The youngest runs just like the wind, speeding through the race.

"He is young in years, we let him run!" the other two brothers explained, "'because though he is surely number one, he is second, in a way." Why is it?