Posted by Renee on Thursday, May 19, 2011 at 7:15am.
change all the fractions so that they have a denominator of 20
your sequence becomes ....
10/20 11/20 12/20 13/20 14/20 15/20 .. 17/20 18/20 19/20 20/20
the missing number should be obvious
btw, you forgot the 19/20 in your list
Thank you!!!!
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