Answer:
D
Step-by-step explanation:
Given:
Lou has the first 4 encyclopedias lined up on a shelf, A, B, C, and D.
To find: probability that he picks A first and B second if he picks two at random
Solution:
Total number of outcomes = [tex]4!=4(3)(2)(1)=24[/tex]
Favourable outcomes are ABCD, ABDC
Number of favourable outcomes = 2
probability that he picks A first and B second = Number of favourable outcomes / Total number of outcomes = [tex]\frac{2}{24}=\frac{1}{12}[/tex]
