Can you place three balls such that the equation shown in the picture holds true?

What is a word made up of 4 letters, yet is also made up of 3. Sometimes is written with 9 letters, and then with 4. Rarely consists of 6, and never is written with 5.

The doctor prescribed you to take one pill from the bottle every half an hour. The bottle is now left with only three pills.

How long do you think you have before you run out of pills?

What is the next number in this matchsticks series riddle?

Which wheel of car does not rotate when you turn your car right?

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

When we see 2 but call 10?

There's a day, that comes around once a year.
To celebrate the man, you hold dear.
He gave you life, love and will pick you up if you fall.
When it comes to guys like him, He's the best of all.
Who is he?

What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?

I have holes on the top and bottom. I have holes on my left and on my right. And I have holes in the middle, yet I still hold water. What am I?