In a true-false test containing 50 questions, a student is to be awarded 2 marks for every correct answer and –2 for every incorrect answer and 0 for not supplying any answer. If Yash secured 94 marks in a test, what are the possibilities of his marking correct or wrong answer?
Given: Yash secured 94 marks so, he must have corrected a minimum of correct 47 questions.
Now, two possibilities-
(1) 47 correct answers and 3 unattempted
(2) 48 correct and 1 unattempted and 1 wrong answer