What happened when the wheel was invented?

Why did Navjot Singh Sidhu put the new January calendar in the freezer

Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

There are 20 people in an empty, square room. Each person has full sight of the entire room and everyone in it without turning his head or body, or moving in any way (other than the eyes). Where can you place an apple so that all but one person can see it?

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?

There are two beautiful yet remote islands in the South Pacific. The Islanders born on one island always tell the truth, and the Islanders from the other island always lie.
You are on one of the islands and meet three Islanders. You ask the first which island they are from in the most appropriate Polynesian tongue, and he indicates that the other two Islanders are from the same island. You ask the second Islander the same question, and he also indicates that the other two Islanders are from the same island.
Can you guess what the third Islander will answer to the same question?

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

In the below-given picture of a pretty girl, there is something wrong. Can you find out what it is?

If I put in one bird per cage, I have one bird too many. If I put in two bird per cage, I have one cage too many. How many cages and birds do I have?