Find the missing number in the following series

Q31. 1, 1, 5, 21, 57, 121, ?

1. 212
2. 221
3. 233
4. 222

Q32. 3, 12, 27, 48, 75, 108, ?

1. 162
2. 183
3. 192
4. 147

Q33. 0, 0, 3, 7, 8, 26, 15, ?

1. 40
2. 48
3. 63
4. 65

Q34. 3, 20, 63, 144, 275, ?

1. 554
2. 548
3. 468
4. 354

Q35. 3, 11, 38, 102, ?, 443

1. 227
2. 237
3. 247
4. 217

Q36. 4, 5, 9, 18, 34, ?

1. 43
2. 49
3. 50
4. 59

Q37. 15, 31, 64, 131, ?

1. 266
2. 256
3. 192
4. 524

Q38. 100, 52, 28, 16, 10, ?

1. 5
2. 7
3. 8
4. 9

Q39. 1, 2, 4, 7, ?, 33

1. 11
2. 18
3. 22
4. 28

Q40. 5760, 960, ?, 48, 165, 8

1. 240
2. 192
3. 160
4. 120