Haryana Police Constable Model Paper 4

Given:
There are 7 multiple choice question
each question has 3 choices
Calculation:
Total number of ways attempting all question = 3 × 3 × 3 × 3 × 3 × 3 × 3 = 37
Number of ways in getting all correct answer = 1 × 1 × 1 × 1 × 1 × 1 × 1 = 1
Number of ways can a student get to fail all correct answer = 2187 - 1 = 2186
∴ The 2186 ways in which a student can fail to get all correct answer so that he will lose the competition.