A girl is twice as old as her brother and half as old as her father. In 50 years, her brother will be half as old as his father. How old is the daughter now?

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

What number divided by 4 is the same as that number minus 4?

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?

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 ?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

Different lights make me strange by changing me into different sizes. What am I?

You have a three-gallon and a five-gallon measuring device. You wish to measure out four gallons.

When it is alive we sing, when it is dead we clap our hands. What is it?