Question

Let z be the set of all integers and
A = {(a, b): a2 + 3b2 = 28, a, b E Z}
B = {(a, b): a > b, a, b e Z}, then n(
AB) is equal to
(1) 1
(2) 6
(4) 8
(3) 3​

Answer 1

Answer:

(4) 8

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