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Earrings

Jane has 4 pairs of blue earrings, 3 pairs of purple earrings, 4 pairs of green earrings, and 6 pairs of yellow earrings. There is a power failure and she can't switch on the light. How many earrings is it necessary to pick, before  she is certain to have a matching pair?

All earrings are identical to each other.

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Comments (4)

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New
Engsays...

5 earrings: There is no left and right earring; even if Jane picks four different colored earrings, the fifth will definitely be a match because the shapes are all the same.

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New
TCsays...

It's wrong. The answer is 30.

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Regular
Tzeniasays...

It's 18

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New
Roseannesays...

5. Even if the first four picks are different, the fifth will make a pair.