Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

Can you divide the below-given shape into four equal and identical pieces?

What is the riddle which can be asked all day with a different correct answer each time.

What is both possible and impossible at the same time?

There was a strange boy who was born before his father. How can this be possible?

What number should come in place of the question mark below?

What is black when you buy it, red when you use it, and gray when you throw it away?

A and B have a certain number of chocolates with them. If B gives one chocolate to A, they will have an equal number of chocolates. But if A gives one chocolate to B, then A will be left with half the number of chocolates that B has.

Can you find out the number of chocolates they have right now?

There are three houses in a straight row. One is red, one is blue, and one is white. The red house is left of the middle. The blue house is right of the middle. Where's the white house?

I am the largest in my family of fifty.
The youngest of our family lives separately from the rest of the family and so do I.
I am regarded as harsh and tough.
I am so large, you cut me in two equal halves,
each half would still be larger than the second largest member of the family.
Who am I?