UGC NET PAPER 2 June 2019 Question 70 (Shift-I)

70. Consider the following statements: S1 : For any integer n>1, a Φ(n) = 1(mod n) for all a ∈ Z*n, where Φ(n) is euler’s phi function.
S2 : If p is prime, then ap = 1(mod p) for all a ∈ Z*p
Which one of the following is are correct:

A Only S1

B Only S2

C Both S1 and S2

D Neither S1 nor S2

ANS. A

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UGC NET CS 2018 July - II Question 69	UGC NET CS 2018 July - II Question 71