How many hours is 800am to 330pm?

What is the smallest whole number which when rounded off to 700? What number is midway of 10 and 20? What is the odd one out is it blind great peaceful or silent? What is 7x31? How many types of heptagons are there? What can 669 be divided by? How many 8 go into 160? Is there a bias in simple random sample? What is an event that occurs every 18 months called? What is ten thousandth? What is 3 multiplied by 63? What does bill type 137 mean? How do you get a good grade on math? How do you find the square root of a number without using guess and check or a calculator? What is the mercury IV coin worth? What is the origin of the word Data? What Is The Symbol Congruent? What does the word congruent have common with a circle? How many tens in 1? What is 19 over 15 as a mixed number?