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For any natural number n the sets S_1, S_2,….. are defined as below: S_1 = {1} . S_2 = {2,3}, S_ 3 = {4,5,6} S_4 = {7,8,9,10}, S_5 = {11,12,13,14,15}:etc. The middlemost element of the set S_(15) is: |
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Answer» 196 |
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