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How many points will be deducted from the second solution of the sixteenth question in Shenyang senior high school entrance examination?
Assuming that he has to answer at least question X, he will get the wrong question (15-x) according to the meaning of the question.
6x-2( 15-x)≥70
X≥ 12.5 of the solution.
Because the number of questions should be an integer, at least 13 questions should be answered.