Why does the fact family for 2x2 4 have only 2 facts?

Are there any living descendants of Albert Einstein? What is 6 times 4 and 5 fifths plus 8 times 3 and 5 fifths? What is the answer to this question The boy to girl ratio in the class was three to five . If there were twenty four students how many boys were there? How do you use the word Area in a sentence? What is the probability of obtaining four tails in five flips of a coin? What is something x2 34? What is babestation number? What Roman symbol can not be subtracted? Is equilateral triangle isosceles? What are two equivalent ratios of 10 to 50? Is 100 mm larger or smaller than 1 meter? How much is 5.10 foot in Cm's? What number is the nearest to 5 between 3.8 and 5.3? How can you classify different numbers? How old are you if you were born 1996? How do you get closest to 1500 with the numbers 1 2 3 4 5 6 7 8 and 9? 2x2 plus 42 equals x2 plus 13x? In which story is a wolf disguised as an old lady? How many times is the number 12 used in the bible? What is 3.58 divided by 4.46?