Pascal 2023 Part B - Question 12, CEMC UWaterloo
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Difficulty: 2
This problem is tagged with pascal, pascal23, highschool.
(Pascal 2023, Part B, Question 11, CEMC - UWaterloo)
Morgan uses a spreadsheet to create a table of values. In the first column, she lists the positive integers from $1$ to $400$. She then puts integers in the second column in the following way: if the integer in the first column of a given row is $n$, the number in the second column of that row is $3n + 1$. Which of the following integers does not appear in the second column?
$(A)$ $31$
$(B)$ $94$
$(C)$ $131$
$(D)$ $331$
$(E)$ $907$
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