What is both possible and impossible at the same time?

There are seven sisters in a house in a village where there is no electricity or any gadget.

Sister-1: Reading Novel
Sister-2: Cooking
Sister-3: Playing Chess
Sister-4: Playing Sudoku
Sister-5: Washing clothes
Sister-6: Gardening

what is Sister-7 doing ?

Usually, a boxing match consists of twelve rounds. In a particular friendly match between two heavyweights, the match was finished in the ninth round itself as one of the boxers knocked out the other one.

But, in that fight, no man threw even a single punch.

How can this be possible?

Can you find out the missing number in the grid?

Find the next number in the sequence

5 12 24 36 ?

Solve the counting riddle by identifying the number of triangles in the given picture.

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

What does this rebus means ?

PROG WORKRESS

What does this mean?

CCCCCCC

A man is found hanging dead from the ceiling of a room. The room’s dimensions are 15 x 15 x 15. The man is only 6ft tall and the rope was only 2ft long. There are no windows and only one door to the room. The door is bolted shut from the inside, and a puddle of water is under the man. How did he kill himself?