Question

Q5. If α1 and α2 are the quadratic residues of a prime p, then

(a) α1.α2 ≡ 1(modp) if p ≡ 1(4)

(b) α1.α2 ≡ 1(modp) if p ≡ −1(4)

(c) α1+α2 ≡ 1(modp) if p ≡ −1(4)

(d) None of these
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Answer 1

Answer:

answer is (b)

I think!!!

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