Question

Two sets A and B are as under:
A = {(a, b) ∈ R × R : |a – 5| < 1 and |b – 5| < 1} ;
B = {(a, b) ∈ R × R : 4(a – 6)² + 9(b – 5)² ≤ 36}. Then

1) B ⊂ Α
(2) A ⊂ B
(3) A ∩ B = φ (an empty set)
(4) neither A ⊂ B nor B ⊂ A

Answer 1

Ans. [2]​

From set A

B = {3 < a < 9, 3 < b < 7}
A ⊂ B​