Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

Find The Next Number In The Sequence

30 10 15 13 0 16 -15 ?

I am the fastest animal but cannot climb the tree. What am I?

A chicken farmer has figured out that a hen and a half can lay an egg and a half in a day and a half. How many hens does the farmer need to produce one dozen eggs in six days?

John buys rice at Rs.60/kg from Britain and then sells them at Rs.5/kg in India. As a result of this, he becomes a millionaire. How come?

Name a key which is hardest to turn.

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?

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

There is a unique number which when multiplied by any number from 1 to 6, we will get the new number that contains the same digits only.

Can you find that number?

If eleven plus two equals one, what does nine plus five equal?