Question

A multiple choice examination consists of 40 questions. The scoring is +5 for each correct answer, -2 for each incorrect answer, and 0 for each unanswered question. Noel's score on the examination is 67. What is the minimum number of questions he could have answered correctly?

Answer 1

15

Explanation:

65+5= 70 - 2 = 68

= 70-4 = 66 (so not 14)

75 - 8 = 67

Which means: 15 correct, 4 incorrect and others attempted