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