Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

Look at the picture and find out which square is not linked with any of the other squares.

Find the missing number in the series below

13 -21 34 -55 ? -144

A chicken farmer has figured out that a hen and a half can lay an egg and a half in a day and a half. How many hens does the farmer need to produce one dozen eggs in six days?

who is silent in the parliament?

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

What is so fragile that saying its name breaks it?

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

An apple seller is hosting a competition. He offers 1000 apples and 10 boxes to the people who pass by. The challenge is to put those 1000 apples in the 10 boxes in such a manner that if he asks for any amount of apples, the person can directly give him the boxes or a combination of boxes. If the person can do it, he promises to give a thousand apples for free.

If you happen to pass by the apple seller, will you be able to win a thousand apples?

A girl has as many brothers as sisters, but each brother has only half as many brothers as sisters. How many brothers and sisters are there in the family?