Find the hidden tiger in the given optical illusion ?

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

What is the riddle which can be asked all day with a different correct answer each time.

A large container is kept in open under the rain. Every passing hour, the water collected inside the container becomes double what it was.

In ten hours, the container is filled completely. Can you calculate how long would it have taken to be filled in half?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

What breaks yet never falls, and what falls yet never breaks?

Solve the equation in the image by looking at the pattern closely.

What word begins and ends with an E, but has only one letter?

What has one eye, but can’t see?

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?