In an examination there are three multiple choice questions and each question has 4 choices. Number of ways in which a student can fail to get all answers correct is
| A. | 11 |
| B. | 12 |
| C. | 27 |
| D. | 63 |
Answer : D Explanation : Aditya said: (1:50am on Tuesday 29th January 2013)
No.of ways of attempting 1st,2nd,3rd questions are each.Total no.of ways=4.4.4=64No.of ways to getting all correct answers=1.1.1=1therefore,No.of ways of not getting all answers correct=64-1=63
|
|
|
Option: A Explanation : Explanation will come here. Explanation will come here. Explanation will come here. Explanation will come here. Explanation will come here. |
