Things that come in groups of 2?

How many basic geometric shapes are there? What percentage is 8 out of 21? What statement describing adlrer belief about personality development is false? What does half as many mean in multiplication? What shape has 4 sides all different sizes and has one pair of parallel lines? How many syllables does the word spoiled have? What is The fifth root of 3.41? Is(2 0) a solution to y-x 2? How many syllables does the word introduction have? Is there more than one reality? How many times does 15 go into 272? How much is 800 add 400 add 400 add 500 add 500 is the total? What is the fractional notation of 3.4? What does 137 round to? What is 3.45 plus 1.2 plus 4.5 plus 6.789 plus 0.67 plus 4.005 equals? How many centimeters makes 166 meters? Can a vector have positive and negative components? Where was the first musician mention in the Bible? Explain why 4564282 is a composite number? The digit in the thousand place is the smallest square number greater than 1?