Recently President of India Inaugurated Economic

24,  12,  18, ?,  157.5,  708.75

5 11 32 65 ? 389

14    16     20     15    25       13      29      9      32      6

640     322      164       86      48      ?

Select the number from among the given options that can replace the question mark (?) in the following series.

2, 6, 12, 20, ?, ?

123      125      129      132      ?      145

218, 108, 160, ? , 1385.50

412,  537,  573, 916,  980,  ?

If   204       196       223     x   284

Then, what is the average of the numbers of the above series?

462 478 510 558 ?