In the following question, four number pairs are given. The number on left side of (–) is related to the number on the right side of (–) with someLogic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives
Young Indian shuttler Pratap Singh has won which of the following series by defeating Denmark's Mads Christophersen in the finals by 21-15, 21-11 in Uppsala?