1. How many whole numbers are between 101 and 499, including 101 and 499? 2. What's the sum of integers between 101 and 499, including 101 and 499? Hint: Use Gauss's technique. 3. The set of 15 diamonds represents $ 3. How many diamonds represent 1? A.) 3 diamonds B.) 5 diamonds C.) 9 diamonds D.) 25 diamonds E.) None of the above 5. Explain how, without doing any calculations, you can tell there is an error in the following calculation. 9/30+98/300+997/3000=1 whole 59/1000