Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

I come in different shapes and sizes.
Parts of me are curved, other parts are straight.
You can put me anywhere you like,
but there is only one right place for me.
What am I?

There were three women in all the swimming costumes!
One was happy and the other two were sad!
The happy one was crying and the sad ones were smiling.
Why was this?

A train leaves from point A for point B at 80 mph. After half an hour, another train leaves from point B for point A at 60 mph.

Which of the trains will be farther from point A when they meet ?

Why is a river so rich ?

Can you replace the question mark with the correct number in the below table sequence?

If your uncle’s sister is not your aunt, what relation is she to you?

What is a word made up of 4 letters, yet is also made up of 3. Sometimes is written with 9 letters, and then with 4. Rarely consists of 6, and never is written with 5.

What has one letter and starts with an E?

What makes this number unique: 8,549,176,320?