5. How do you know that there is an error in each of these? a. ten = 24three b. fifty-six = 107 seven c. thirteen and three-fourths = 25.3 four 6. Write each of these in the usual base ten words and as a base ten numeral. For example, 1 1 1two = 7ten- a. 37twelve b. 37 four c. 207.0024ten d. 1000two e. 1,000,000two f. 221.2three 7. For a given number, which base-two or twelve-will usually have a numeral with more digits? What are the exceptions? 8. In what bases would 4025b be a legitimate numeral? 9. Someone said, "A number can be written in many ways." Explain that statement. 10. On one of your space voyages, you uncover an alien document in V 8 which some "one, two,..." counting is done: obi, fin, mus, obi na, obi Number and Number Sense Module 13 Notes obi, obi fin, obi mus. What base does this alien civilization apparently use? Continue counting through twenty in their syst 1 1. Hints of the influence of other bases remain in some languages. NY 71