What is a observation that deals with numbers (n)?

What factors contributed to Pythagoras's success? Is 834219 divisible by 9? What is 0.505 as a percent? What is one eighth size? What is a 1.3 cm lower pole right renal cyst mean? What is the fraction for two and seven thousandths? What are all the numbers that equal 81? How do you evaluate 3 squared-2x 1? Moving from one place to another for any number of reasons? What type of document is the standard form 1164? What does one half of one half equal? What is 81 square feet converted to square yards? How many days away is March 20? What is the prime number just before 97? What should you wear when taking body measurement? Can a natural number be a rational number also? Two numbers have a sum of 39 Their difference is 11 What are the two numbers? Wouldn't the calendar make more sense with 12 months of 28 days and 1 months of 29 days instead of 31 in 7 30 in 5 and 1 with 28? Who discovered the Bible first? What is 52 divided by 8?