The number of odds and evens cannot differ by more than 1.
40 = 2/5, so 2 odds and 3 evens works
48 = 24/25
50 = 1/2
60 = 3/5
45 = 9/20 which cannot be. If there are 9 odds, there cannot be 11 evens.
Vasya wrote down several consecutive integers. Which of the following could not be the
percentage of odd numbers among them?
(A) 40 (B) 45 (C) 48 (D) 50 (E) 60
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