What is always in front of you but can’t be seen?

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

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

A cricket has 6 legs, a squirrel has 4 legs and a spider has 8 legs.

In a local zoo, it was found that the total number of legs is 612. Also, there are equal number of each of the above animals/insects.

Can you find out how many animals are there in the zoo?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

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

There was a competition where the contestants had to hold something. At the end of the event, the winner was a person who had no hands or feet. What was it that the contestants had to hold?

'S' refers to the number of seconds in a day and 'H' refers to the number of hours in ten years. Which quantity out of these two is greater?

No one wants to have it, but if one got it, he does not want to lose it. What is It?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?