How many times can you subtract the number two from the number fifty?

what does the below math rebus puzzle mean?

Peter wakes up daily to pick up his cycle and crosses the border between Spain and France daily with a bag on his shoulder. He is investigated daily by the officials but they don't find anything suspicious.

If we tell you that he is smuggling something what would it be?

Spot 5 differences in two Christmas tree below:

What am I?

Two guards were on duty outside a barracks. One faced up the road to watch for anyone approaching from the North. The other looked down the road to see if anyone approached from the South. Suddenly one of them said to the other, "Why are you smiling?"

How did he know his companion was smiling?

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

I am five letter word that is under you.
If you remove my 1st letter, then I am over you.
If you remove my 1st and 2nd letters then I am all around you.

Who am I?

I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

How many sides does a circle have?