Snow White and the Thousand Apples

A Bunch of Apples
Topic: Logic
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After finding out from an enchanted mirror that Snow White is the smartest of them all, the Evil Queen has decided to lock Snow White in a dungeon with one thousand apples! Out of the apples there is only one that can save her. All the apples to the left are normal, and all the apples to the right are poisonous. Snow White can eat no more than two poisonous apples. Only if she can find the right apple knowing the least amount she'd have to try to guarantee finding it can she escape. Can Snow White solve the Queen's riddle?

Common Core Standards: SMP
Problem #: 
167 (2017-2018)
Problem Difficulty Level: 6 [?]