What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

How many times in a given day, minutes and hour clock comes in a straight line ?

What number do you get when you multiply all of the numbers on a telephone's number pad?

If nine thousand, nine hundred nine dollars is written as $9,909,
how should twelve thousand, twelve hundred twelve dollars be written?

I am a ten letters word
The first four letters have the power to rule,
Next, four-letter can be eaten.
The next three-letter represents a lady.
I can fly as well

what am I looking for?

There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

You visit a home for specially-abled children on the occasion of Christmas where you meet with 50 children. You have a box of chocolates containing 50 chocolates exactly.

What if you were asked to one chocolate to each child in a manner that one chocolate still remains in the box? Is it possible?

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

Using eight eights and addition only, can you make 1000?

In the figure that has been attached to this question, each digit represents a digit. The similar letters carry the same integer value. Can you expose the original digits?