An examination consists of 100 questions. Two marks are awarded for every correct option. If one ...

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An examination consists of 100 questions. Two marks are awarded for every correct option. If one mark is deducted for every wrong option and half mark is deducted for every question left, then a person scores 135 . Instead, if half mark is deducted for every wrong option and one mark is deducted for every question left, then the person scores 133 . Find the number of questions left unattempted by the person.
(a) 14
(b) 16
(c) 10

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