During which month do people sleep the least?

In a science lab, a petri dish hosts a healthy colony of yeast for an experiment. Now every minute, all the yeast cells divide into two. At noon, there was just a single cell of yeast and at 1:22, the Petri dish was half full. Can you calculate when the dish will be full of yeast?

If 1+9+8=1, what is 2+8+9?

While going to your grandmother's house, you counted Twenty houses on the right side. While returning back to your home, you counted Twenty houses on the left side.

How many houses are there between your home and your grandmother's home?

John can place six large boxes or nine small boxes into a carton.

Can you find out in how many cartons can he place sixty-six boxes in total?

Identify the hidden meaning behind this picture?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

A bomb goes off.
Carnage.
One person, only a few feet away, survives! How can this be?

A man was gazing through the window of the 23rd floor of the building. He suddenly opened the window and jumped on the other side of the window. On landing on the floor, there was not a sheer mark of injury on him.

How can that be possible if he did not use any kind of parachute and did not land on a soft surface?