What seven-letter word has hundreds of letters in it?

At a party, there are five people and a whole round cake lying at the centre of the table. Only four people will make a cut and take their piece and the last one will get the remaining piece on the table. How can they make sure that everyone gets a 1/5th of the piece?

81 x 9 = 801. What must you do to make the this equation true?

If,

6 / 7 = 2
3 / 9 = 7
8 / 2 = 6

Then

4 / 5 = ?

What is next number in the pattern below:

131 517 192 123 ?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

A dead body is found outside a multi-story multinational company. The case is reported and a homicide detective is called on the crime scene.

He looks at the body and then towards the building. From the position of the body, it is evident that the victim committed suicide. He goes to the first floor of the building and then walks in the direction of the dead body, opens the window and toss a coin in the air.

He goes to second floor and again repeats the process. He keeps doing this till he is done on all the floors. Then he returns back to the floor and tells his team that it is a murder.

How in heaven did he deduce that?

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

What work can one never finish?

Can you replace the question mark with the correct number in the below table sequence?