Answer :
4 multiple choice questions
3 answers per question
4 × 3 = 12
12 possible answers total
12 - 4 = 8
8 incorrect answers
4 correct answers
3 × 3 × 3 × 3 = 81
81 possible ways they can answer
Only one of those ways is 100% correct.
81 - 1 = 80
80 ways
3 answers per question
4 × 3 = 12
12 possible answers total
12 - 4 = 8
8 incorrect answers
4 correct answers
3 × 3 × 3 × 3 = 81
81 possible ways they can answer
Only one of those ways is 100% correct.
81 - 1 = 80
80 ways