In an examination there are three multiple choice questions and each question has 4 choices. The number of ways in which a student can fail to get all answer correct is-
A. 11
B. 27
C. 12
D. 63
Answer: Option D
Solution(By Examveda Team)
Number of ways of attempting 1st, 2nd, 3rd question are each.Total number of ways
43 = 4 × 4 × 4 = 64
Number of ways, getting correct answers = 13 = 1
∴ Number of ways of not getting all answer correct = 64 - 1 = 63
Related Questions on Permutation and Combination
A. 3! 4! 8! 4!
B. 3! 8!
C. 4! 4!
D. 8! 4! 4!
A. 7560,60,1680
B. 7890,120,650
C. 7650,200,4444
D. None of these
A. 8 × 9!
B. 8 × 8!
C. 7 × 9!
D. 9 × 8!
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