Question
Question: Each of 5 questions in a multiple choice questions test has four alternatives. The number of differe...
Each of 5 questions in a multiple choice questions test has four alternatives. The number of different sets of possible answers, when exactly one of the four alternatives is correct, is
A
45 – 4
B
54
C
45
D
54 – 1
Answer
45
Explanation
Solution
Since each question can be answered in exactly four ways, therefore, the required number of possible sets of answers.
= 4 x 4 x 4 x 4 x 4 = 45