Eight of us go fourth, not back, to protect our king from an attack. What are we?

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 ?

There is a square piece of paper with a hole that is denoted by the circle on the top right side in the given picture. You have to cut the paper in a manner that it forms two and only two separate pieces of paper and then rearrange the pieces in a manner that the holes come in the centre of the paper.

What begins with T, ends with T, and has T in it?

"That Restaurant always remains crowded. This is the reason why nobody goes there".

Can you find a flaw in this statement?

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

I have lakes with no water, mountains with no stone and cities with no buildings. What am I?

A container contains 100 eggs. They can be either fresh or rotten. What is sure is the fact that there is at least one fresh egg in that container.

If you are asked to pick two eggs randomly from the container, at least one of them will be rotten.

Can you calculate how many eggs in that container are fresh?

If it took eight men ten hours to build a wall, how long would it take four men to build it?

1 + 9 + 8 = ?
considering, 28 + 8 + 92 = 10