Out of 600 mobile owners investigated, 500 owned Nokia hand set and 180 owned Tata hand set; 30 owned both Nokia and Tata hand sets. Is this data correct?

### Asked by Topperlearning User | 17th Apr, 2014, 01:18: PM

Let U denote the universal set consisting of all mobile owners, N denote the set of all owners of Nokia hand set and T denote the set of all owners of Tata hand- set.

_{}T) = 30.

_{}T) = n(N) + n(T) – n(N

_{}T)

_{}T is a subset of U.

_{}T)

_{}n(U)

_{}650

_{}600, which is impossible.

_{}Given data is incorrect.

### Answered by | 17th Apr, 2014, 03:18: PM

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