Things that come in groups of 2?

Why is one half more than one fourth? A tortoise runs at 12 cms and a hare can run 20 times faster In a race they both start at the same time but the hare stops for 4 min and the tortoise wins by 35 cm Find his time and length of the race? What is the solution in 80 times 4? How do you factor squared letters? Does distributive property apply to complex numbers? What numbers could you mutiply to get 49? How many days in the 6 months? What is five hundred million divided by 20? Can a system of two direct variation equations have no solutions? When you multiply a number by 7 and add 8 to the answer it makes 50 what is the number? What is 8p-3 equals 13 shown work? How much is a box of dimes? WHAT IS 34 percent of 410? How do you solve x minus y equals 6 and x plus y equals -2? How many 4 inches in 5 meters? What do the straight lines represent in a circuit? A number line used to reference points? Why did Christiaan Huygens build a clock? What is the binary code of 237? How many times is Jesus written in the Bible?