Directions (1-5): What will come in place of the question mark (?) in each of the following series?
1. 10. 6 13 38? 532 2675 (a)
a. 129
b. 123
c. 172
d. 164
2. 10 17 48 165 688 3475 ? (d)
a. 27584
b. 25670
c. 21369
d. 20892
3. 3 4 12 ? 196 (a)
a. 45
b. 40
c. 41
d. 49
4. 7 12 32 105? (a)
a. 428
b. 214
c. 218
d. 416
5. 8 27 64 125 218 343 in this series which is wrong? (b)
a. 27
b. 218
c. 125
d. 343