I round a whole number to 1 significant figure and get 1000. What is the smallest value and largest value I could have started with? Give a reason for your answer. Now I round another whole number to 2 significant figures and again get 1000. What is the smallest value and largest value I could have started with? Give a reason for your answer

Algebra and Trigonometry (MindTap Course List)
4th Edition
ISBN:9781305071742
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter14: Counting And Probability
Section14.CT: Chapter Test
Problem 4CT: Over the past year, John has purchased 30 books. a In how many ways can he pick four of these books...
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  1. I round a whole number to 1 significant figure and get 1000. What is the smallest value and largest value I could have started with? Give a reason for your answer.
  2. Now I round another whole number to 2 significant figures and again get 1000. What is the smallest value and largest value I could have started with? Give a reason for your answer
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Hello can you please explain to me why the solution to this example cannot be 955.   I will copy the example down bellow. 

you said that correct answer is 995. But i dont understand why it cannot be 955 when both of the figures 5 we round up.

Thanks 

Now I round another whole number to 2 significant figures and again get 1000. What is the smallest value and largest value I could have started with? Give a reason for your answer

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