Move four matchsticks to the below square to form three squares?

If you read clockwise, you can form a word by inserting three missing letters in the picture given below. Can you do it?

There’s a girl who has a large family. She has an equal amount of brothers and sisters, but each brother only has half as many brothers and sisters. What’s the correct amount of brothers and sisters?

I can turn polar bears white.
I can make anyone dance.
I can make everyone cry
I can make your hands clap
I can make you thin.
I can make you smile.
I can make you smile

Can you guess the riddle?

What has a bottom at the top?

You need to move three matchsticks to form three squares. Can you do it?

Until it is measured, not known. Yet how you miss it when it has gone. What is it?

John speaks the truth only once a day in a week. Below are a few hints for you:

First: Days are Sunday, Monday and so on.
Second: One day he says, "I lie on Monday and Tuesday".
Third: On the next day, he says, "Today is either Thursday, Saturday or Sunday".
Fourth: On the next day, he says, "I lie on Wednesday and Friday".

Can you identify the day on which he speaks the truth?

Today, I celebrated my 32nd birthday but I was born in 1972.
How is this possible?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?