By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

What has 13 hearts but no other organs?

I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

What has one letter and starts with an E?

I have two coins.
* One of the coins is a faulty coin having a tail on both sides of it.
* The other coin is a perfect coin (heads on side and tail on other).

I blindfold myself and pick a coin and put the coin on the table. The face of the coin towards the sky is the tail.

What is the probability that another side is also tail?

1 rabbit saw 9 elephants while going to the river. Every elephant saw 3 monkeys going toward the river. Each monkey had 1 parrot in each hand. How many animals are going towards the river?

How can you make a TV, a bed, a dog, and a car liquid?

What country can make you shiver?

Can you complete the sequence?

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