What has one letter and starts with an E?

Do You See It?

I am white when I am dirty, and black when I am clean. What am I?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

What has many keys but can’t open a single lock?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

Twice ten are six of us,

Six are but three of us,

Nine are but four of us;

What can we possibly be?

Would you know more of us?

Twelve are but six of us,

Five are but four, do you see?

What are we?

Can you name three consecutive days without using the words Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, or Sunday?

A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?