Directions (next 6 questions) : What will come in place of questions mark (?) in the given number series
16 ,18, 28, 54, ? ,186
1.3, 3, 6.4, 11.5, 18.3
196 ,100, 52, 28, ? ,10
1.5, 2.5, 7, 24, 100
22, 19.7, 24.3, 17.4 ,? ,15.1
1, 2,6 ,21, ? ,445