Question

Out of 500 Car owners investigated, 400 owned Car A and 200 Owned Car B, 50 Owned both A and B Cars. Is this data Correct?​

Answer 1

Answer:

i think no

Step-by-step explanation:

I think no , not sufficient data ok

Answer 2

Let U = set of car owners investigated M = set of persons who owned car A S = set of persons who owned car B. Then n(u) = 500, n(M) = 400, n(S) = 200 and n(S∩M) = 50 ∴ n(S∪M) = n(S) + n(M)-n(S∩M) = 200 + 400-50 = 550 But S∪M⊂U⇒n(5∪M)≤n(U)