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Simple question 27 63

  1. Dec 18, 2012 #1
    1. The problem statement, all variables and given/known data
    so we have from 27... 63 we want ot calcul how much numbers in there
    i was looking in the book and saw 63 -27 + 1 , now this might sound very simple but i got confused why do we add the"1" please explain..
    PS:this is astupid uestion i know but it's weird it confused me ..

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Dec 18, 2012 #2


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    Homework Helper

    Not a calculus question, should be in Precalc.

    OK, how many numbers from 1 to 5 (including both the starting and ending numbers)?

    Is it just 5 - 1? Or is it 5 - 1 PLUS 1?

    Same principle when you count from 27 to 63. If you don't add the 1, you're neglecting the starting number.
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