Euler’s Phi Function | Theorems | Gauss Theorem | Lecture 3

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1. Prove phi (n) is an even integer for n is greater than 2
2. If n = p^k , p is prime number. Prove that sum of phi(d) = n where d| n
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10:00 par galat dikhaya ha... Apny d ki value ni n ki value use ki

Themathjester