A set of 25 two digit numbers are listed below 10,17,20,23,24,28,32,39,42,25,26,52,55,58,61,65,66,72,75,78,79,85,94,97,98.
What is the probability of the sum of the number's digits is odd?
+501 +147 +206 Feb 20, 2021
+1678 +308 +1678 +308 +308
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