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

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

What is the next shape from answers A, B, C, and D figure?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

Who is that with a neck and no head, two arms and no hands? What is it?

O_er_t_o_

Complete the missing letters of the given word.

100 prisoners are stuck in the prison in solitary cells. The warden of the prison got bored one day and offered them a challenge. He will put one prisoner per day, selected at random (a prisoner can be selected more than once), into a special room with a light bulb and a switch which controls the bulb. No other prisoners can see or control the light bulb. The prisoner in the special room can either turn on the bulb, turn off the bulb or do nothing. On any day, the prisoners can stop this process and say "Every prisoner has been in the special room at least once". If that happens to be true, all the prisoners will be set free. If it is false, then all the prisoners will be executed. The prisoners are given some time to discuss and figure out a solution. How do they ensure they all go free?

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

In a town, there are over 100 flats.
Flat-1 is named first flat.
Flat-2 is named second flat.
Flat-3 is named third flat.

A visitors 'Victor' decides to walk through all the flats, he finds all the flats except flat-62.
Victor later founds that the local of the town have given it another name.

What is the name of the Flat?

A man was driving a black truck. His lights were not on. The moon was not out. A lady was crossing the street. How did the man see her?