- #1
Michele Nunes
- 42
- 2
Homework Statement
What is the minimum number of digits to the right of the decimal point needed to express the fraction
a) 4
b) 22
c) 26
d) 30
e) 104
Homework Equations
The Attempt at a Solution
One possible solution is: "We can rewrite the fraction as
So I understand how they rewrote the fraction, however I'm totally lost by everything after that. I'm not exactly sure why a 5 is added to the right if the numerator is divided by 2 and how that has anything to do with the last digit being odd. Also, a calculator is not allowed on this. If someone could either clarify the explanation given or give a more simplified alternate solution, that would be appreciated.
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