Quickly Solve this riddle

7 - 4 + 3 * 0 + 1 = ?

If a wheel has 54 spokes, how many spaces are there between the spokes?

Paul's height is six feet, he's an assistant at a butcher's shop and wears size 9 shoes. What does he weigh?

A father's child, a mother's child, yet no one's son.

Who am I?

We know that the number 7 is the prime followed by a cube. Which next number is also a prime followed by a cube?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

You are given a set of weighing scales and 12 marbles. The scales are of the old balance variety. That is, a small dish hangs from each end of a rod that is balanced in the middle. The device enables you to conclude either that the contents of the dishes weigh the same or that the dish that falls lower has heavier contents than the other. The 12 marbles appear to be identical. 11 of them are identical, and one is of a different weight. Your task is to identify the unusual marble and discard it. You are allowed to use the scales three times if you wish, but no more. Note that the unusual marble may be heavier or lighter than the others. You are asked to both identify it and determine whether it is heavy or light

Can you replace the X (both small and big x) with the numbers between 1 to 19 such that all the rows of 3 numbers between X (big x) sum to 23?

A network of 20 x 10 squares is given to you.

Can you calculate how many unique squares and rectangles can be formed combining two or more individual squares ?