What three numbers, none of which is zero, give the same result whether they’re added or multiplied?

What is full of holes but still holds water?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

Find the Goldfish below the given Image.

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

I am the beginning of everything, the end of everywhere. I'm the beginning of eternity, the end of time and space. What am I?

Identify the hidden meaning behind this picture?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

If Bihan is 10, Anirudha is 20, and Kim and Seal are both 5, but Rikold is 10, how much is Kenniger by the same trend?

The host of a game show, offers the guest a choice of three doors. Behind one is a expensive car, but behind the other two are goats.
After you have chosen one door, he reveals one of the other two doors behind which is a goat (he wouldn't reveal a car).

Now he gives you the chance to switch to the other unrevealed door or stay at your initial choice. You will then get what is behind that door.

You cannot hear the goats from behind the doors, or in any way know which door has the prize.

Should you stay, or switch, or doesn't it matter?