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?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

If there are fifteen crows on a fence and the farmer shoots a third of them, how many crows are left?

Who is generally closer to the kids, mom or dad?

(it's a funny riddle)

Use the numbers 2, 3, 4 and 5 and the symbols + and = to make a true equation. Conditions: Each must be used exactly once and no other numbers or symbols can be used.

A high school has a strange principal. On the first day, he has his students perform an odd opening day ceremony:

There are one thousand lockers and one thousand students in the school. The principal asks the first student to go to every locker and open it. Then he has the second student go to every second locker and close it. The third goes to every third locker and, if it is closed, he opens it, and if it is open, he closes it. The fourth student does this to every fourth locker, and so on. After the process is completed with the thousandth student, how many lockers are open?

If,

6 / 7 = 2
3 / 9 = 7
8 / 2 = 6

Then

4 / 5 = ?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

Spot the cat in the picture below

In particular commonwealth games, a female participant won silver and gold medals for a single event.

How can this be possible?