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Kyle found that 31/97= 0.3196. Without doing any computation, explain how we know that Kyle is wrong?

 Feb 25, 2021
 #1
avatar+37153 
+2

This was asked the other day.... from cphil:  with a prime number in the denominator you will always have a  nonterminating decimal

 

 

31/97 = 31/97 = 0.3195876288659794.......

 Feb 25, 2021
 #2
avatar+240 
+1

Kyle is definitely wrong, 31/97 cannot be a perfect number, so Kyle must have rounded the number.

 

cheekycheekycheeky​ ​ 

 Feb 26, 2021

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