The first box has two white balls. The second box has two black balls. The third box has a white and a black ball.

Boxes are labeled but all labels are wrong!

You are allowed to open one box, pick one ball at random, see its colour and put it back into the box, without seeing the colour of the other ball.

How many such operations are necessary to correctly label the boxes?

Can you divide numbers from 1 to 9 (1 2 3 4 5 6 7 8 9) into two groups so that the sum of the numbers of each group is equal?

Note: 9 cannot be turned over to make it 6.

What's the only room from which no one can enter or leave

Identify the movie name through below Rebus containing Pi Mouse and coconut tree..

"That Restaurant always remains crowded. This is the reason why nobody goes there".

Can you find a flaw in this statement?

What occurs twice in a week, once in a year but never in a day?

Replace the question mark with the number below given a simple math problem.

A 52% bias toss for head using the 51% tail bias coin was done to obtain a fair result.

Can you find how bias is the floor in this case?

There's one "sport" in which neither the spectators nor the participants know the score or the leader until the contest ends.

What is it?

Take number 1000 and then add 20 to it.
Now add 1000 one more time.
Now add 30.
Now add 1000 one more time.
Now add 40.
Now add 1000 one more time.
Now add 10.

What is the total?