How can you leave a room with two legs and return with six legs?

Below the four parts have been reorganised. The four partitions are exactly the same in both arrangements. Why is there a hole?

An American nightclub called 'The Coconut Grove' had a terrible fire in which over 400 people died. A simple design flaw in the building led to a high death toll. Subsequently, regulations were changed to ensure that all public buildings throughout the country eliminated this one detail, which proved deadly. What was it?

John was driving a bus and got stuck when passing through an underpass. Then came Jacob with a needle and got the bus out of the underpass.

What did the boy do?

You have $100 with you and you have to buy 100 balls with it. 100 is the exact figure and you can't go below or above the numbers and you have to use the entire $100. If there is no kind of tax applied how many of each of the following balls will you be able to buy:

Green Balls costing $6
Yellow Balls costing $3
Black Balls costing $0.10

Now, how many of each must you buy to fulfil the condition given?

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

No matter how little or how much you use me, you change me every month. What am I?

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

How many words can a pen with half refill write?

How can I get the answer 24 by only using the numbers 8,8,3,3?

You can use the main signs add, subtract multiply and divide.