What is so fragile that saying its name breaks it?

Thirty friends were on a hiking trip when they decided to enjoy the bonfire. They assembled for it and agreed to play a game. For that, they divided themselves into five teams with seven members each, forming five rows.

How did they manage to achieve this formation?

There was a minor accident with a doctor's son but the doctor noticed no major injury. After the treatment, the father of that doctors son is sitting with the son of the doctor without the doctor being in the room.

How can this be possible?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

Nine marbles are arranged in the image below. Can you slide two marbles to form a square?

On her drawing table, Sayna lit 12 coloured candles. A few seconds later she blew two candles off.

How many candles Sayna have at the end?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

Paul's height is six feet, he's an assistant at a butcher's shop and wears size 9 shoes. What does he weigh?

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?