P(A) means "Probability of Event A" The complement is shown by a little mark after the letter such as A' (or sometimes Ac or A): P(A') means "Probability of the complement of Event A" The two probabilities always add to 1.
Step-by-step explanation:

2km=2000m
25m=25m
2500cm=25m
3000mm=3m
Hence the longest is 2km=2000m
Answer:
12%
Step-by-step explanation:
Divide 267 by 304
Lucia got 88% correct
Lucia got 12% Incorrect