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Mathematics, 29.10.2019 01:31 HoneySoft

Count the number of functions φ: (−4,−3,…,0)→(−4,−)
so that
(i) φ is one-to-one and φ(0)=−1
(ii) φ is one-to-one and φ(0)≠−1

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Count the number of functions φ: (−4,−3,…,0)→(−4,−)
so that
(i) φ is one-to-one and φ(...

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