This question already has an answer here:


Please note: "She never had to cut an orange".


marked as duplicate by Oray, Kate Gregory, Deusovi Apr 27 at 14:40

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She started with

7 oranges

so she sold to the first customer

7/2 + 1/2 = 4 oranges, leaving her with 3 oranges.

She sold to the second customer

3/2 + 1/2 = 2 oranges, leaving her with 1 orange.

She sold to the last customer

1/2 + 1/2 = 1 orange,

leaving her with none, and no orange had to be cut.


If she started with $y$ oranges, then this is true:
So she started with $7$ oranges.


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