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Two different numbers are randomly selected from the set S = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}. The probability that the sum of the two numbers is 12 would be greater if the number n had been removed from the set S before the two numbers are selected. What is the value of n?

 Feb 10, 2020
 #1
avatar+21542 
+2

Remove the number  6  because it can't be combined with any other number to create a sum of  12.

 Feb 10, 2020
 #2
avatar+217 
+1

Thank you!!

mathmathj28  Feb 11, 2020

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