Select the option that is related to the third term in the same way as the second term is related to the first term and sixth term is related to fifth term. 2 : 9 :: 9 : ? :: 6 : 217

730 28 513 82

730

2 : 9 :: 9 : ? :: 6 : 217 The logic followed here is : Ist number3 - 1 = IInd number AS 2 : 9 23 + 1  = 8 + 1 = 9 And 6 : 217 63 + 1  = 216 + 1 = 217 Similarly 9 : ? 93 + 1  = 729 + 1 = 730