Assume the given figure to be a delicious doughnut. Yes, now you can concentrate more on the puzzle. So you have this delicious doughnut in your refrigerator when your friends come knocking at the door. There are eight of them. Now you have to make three cuts in this doughnut so that each one of you nine people can enjoy a piece of it. Neither you nor your friends would mind the size of their piece as long as they are getting it. How will you do it?

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?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

By what process could you make a 'Tea-Table' into food?

How high do you have to count before you use the letter “a” in the English spelling of the whole number?

Can you make a six-letter word using the letters N, A and B ?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

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?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

I want to fill my bucket using both cold and hot water.
I have two taps for both cold and hot water. The hot water tap fills the bucket in exact 6 hours and the cold water tap fills the bucket in exact 4 hours.
I turn both of them simultaneously but I forgot to turn off another tap which removes the water out of the bucket. This tap can empty the bucket in 12 hours.

How Long will it take to fill the bucket?