Can you place three balls such that the equation shown in the picture holds true?

A certain street contains 100 buildings. They are numbered from 1 to 100. How many 9's are used in these numbers?

When can we add 2 to 11 and get 1 as the correct answer?

What is harder to catch the faster you run?

The more you take me, the more you leave me behind.
Who Am I?

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

I travel all around the world but always stay in the corner. What am I?

On a bright sunny day, two fathers took their son fishing in the lake. Each man and son were able to catch one fish. When they returned to their camp, there were only three fishes in the basket. What happened?

PS: None of the fish were eaten, lost, or thrown back.

Sweet & very intelligent katty has 8 puppets(Jane Bird Barbie Angel Colleen Nora Lass Missy).
All puppets are of different size. She arrange all puppets to face towards the guest and tell the guess the following clues :

* Jane has three puppets bigger on its left side
* Bird has two puppets smaller on its left side
* Barbie has one puppet bigger on its right side
* Angel has two puppets smaller on its right side
* Colleen has one puppet bigger on its left side
* Nora has one puppet smaller on its left side
* Lass has four puppets bigger on its right side
* Missy has three puppets smaller on its right side

Also some puppets are inside the bigger puppets.

Assuming you are the guest , can you tell the katty how the puppets are arranged ?

Why do we preferably have round manhole covers and not square ones?