alleryStart learning →A phone book is ordered by city, then surname. Which lookup is easy?
AEvery entry of one surname
BEvery entry in one city
CEvery entry with one initial
DEvery entry of one first name
Answer & Solution
Correct answer: B. Every entry in one city
Only the first ordered column gives direct access, so listing everyone in one city is easy while a surname search must visit each city.
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