If the difference between the number of subsets of the sets A and B is 120 , then choose the incorrect option.

Step-by-step solution

Let, n A = α , n B = β α > β given, 2 α - 2 β = 120 ⇒ α = 7 , β = 3 ∴ n A ∩ B ∈ 0 , 3 ∵ n A ∪ B = α + β = n A ∩ B n A ∪ B ∈ 7 , 10