5 9 30 115 582 3483
18 a b c d e
What would come in place of c?
The above series go in the following sequence. 5 x 2 – 1 = 9 9 x 3 + 3 = 30 30 x 4 – 5 = 115 115 x 5 + 7 = 582 582 x 6 – 9 = 3483 Hence, the resulting series would be: 18 35 108 427 2142 12843