Using Only Five 5's and any mathematical operator make sum as 37

What has many teeth, but cannot bite?

A plane crashed between the border of Mexico and America. Where do you bury the survivors?

What is the riddle which can be asked all day with a different correct answer each time.

Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

Outside a massage parlour, there is a board that reads
"I only massage those who do not massage themselves."

Reading the above statement, does the masseur massage himself?

What number comes next in the series?

5 15 5 18 5 24 14 20 _

A guard is positioned at the one side of the bridge saying ‘A’. His task is to shoot all those who try to leave from ‘A’ to the other side and say ‘B’. He also need to welcome the person who comes from another side ‘B’ to his side ‘A’. The guard comes out of his post every 1 hour and looks down the bridge for any people trying to leave. You are at side ‘A’ and wish to go to another side ‘B’. you also know that it would take 1:45 hr to cross the bridge. How will you cross the bridge?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?