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KVPY SX SB Exam 2018 Question Paper

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Question : 16

Total: 120

The number of functions f : [0, 1] → [0, 1] satisfying |f(x) – f(y)| = |x – y| for all x, y in [0, 1] is

exactly 1
exactly 2
more than 2, but finite
infinite

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