Problem Solving (PS) | Re: Ben and Ann are among 7 contestants from which 4 semifinalists are to

chetan2u Bunuel I know I am coming up with the wrong answer, but can you help me understand what is wrong with the below approach-
[Total number of ways to select 4 candidates out of 7] -[number of ways Ben and Ann can be selected in the semifinalists]

Total number of ways to select 4 candidates out of 7 = 7C4 = 35

number of ways Ben is selected in the semifinalists (except Ann) = B_ = 1x5 ways = 5
number of ways Ann is selected in the semifinalists (except Ben) = A_ = 1x 5 ways = 5
ben and ann together as semifinalists = 1 way
number of ways
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