Forget conventional ways of solving math questions. In PS, IVY approach is the easiest and quickest way to find the answer.
On a test, students receive 3 points for each correct answer and are penalized by losing one point for each incorrect answer. There are 6 questions on the test and each question has 4 answer options, A, B, C, and D. It is known that 5 of the questions have option B as the correct answer and one question has option C as the correct answer. If a student marks B for the first 3 questions and C for the last 3 questions, what is the minimum possible score that student can receive?
A. -2
B. -1
C. 0
D. 1
E. 2
To get minimum score the student should have as few as possible correct answers. That means the student should have as many as possible incorrect answers. Since among 6 questions only 1 question has correct answer is C, the student should mark it as B to have as many as incorrect answers. That means the question with correct answer C should be among the first 3 questions. So among the first 3 questions the student should answer only 2 questions correctly and the last 3 questions incorrectly. In that case the number of correct answer is 2, and the number of incorrect answer is 4. So the score is 2*3 -4*1=2. The answer is E.
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