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A test has $50$ questions. A student scores $1$ mark for the correct answer, $-1/3$ for a wrong answer and $-1/6$ for not attempting the question. If the net score of the student is $32,$ the number of questions answered wrongly by that student cannot be less than

  1. $6$
  2. $12$
  3. $3$
  4. $9$
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