How many triangles are there on the puzzle below?

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 ?

What can go up a chimney down, but can’t go down a chimney up?

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

I guess 76.8% of readers will like this riddle.

What's the least number of people should read this post?

Find out the number of circles in the given picture having Illusion

The centre of the third figure is empty. What digit should fit inside?

The first person saw the bridge step on it and crossed,
the second person saw the bridge did not step on it but crossed,
the third person did not see the bridge did not step on it but crossed.
Who are these people?

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

What is so fragile that saying its name breaks it?