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

The first box has two white balls. The second box has two black balls. The third box has a white and a black ball.

Boxes are labeled but all labels are wrong!

You are allowed to open one box, pick one ball at random, see its colour and put it back into the box, without seeing the colour of the other ball.

How many such operations are necessary to correctly label the boxes?

Which is heavier: a ton of bricks or a ton of feathers?

I go up and I go down.
I go up towards the beautiful sky and down toward the green ground.
I am present tense.
I am past tense too
Children love me.

Who Am I?

There is something which is always coming but never arrives?

What can jump higher than a building?

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

Which five letter word can be added at the end of below word to form a
valid word?

> Pin
> Check
> Boiling
> View

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

A new clothing store has a unique method of pricing items. A vest costs $20, a tie costs $15, a blouse costs $30, and underwear costs $45. How much would pants cost?