Find the total number of 8 digits numbers that can be formed, all having different digits.
9 × 9!
9 × 8!
(9/2) × 8!
Correct Answer is: (9/2)× 9!
In a question of a test paper, there are five items each under List-A and List-B. The examinees are required to match each item under List-A with its corresponding correct item under List-B. Further, it is given that
(i)No examinee has given the correct answer
(ii)Answers of no two examinees are identical
What is the maximum number of examinees who took this test?