Directions (1-15): In each question below only one number is missing. Please understand the series carefully and find the value of question mark(?).
Q1. 3, 6, 15,45, 157.5, ?
(a)415
(b)375
(c)430
(d)630
(e)540
Q2. 30, 42, ?, 72, 90, 110
(a)64
(b)49
(c)58
(d)62
(e)56
Q3. 8, ?, 12, 33, 128, 635, 3810
(a)9
(b)7
(c)20
(d)18
(e)12
Q4. 4, 7, 16, 43, 124, ?
(a)346
(b)354
(c)367
(d)378
(e)389
Q5. 123, 173, 214, 246, 269, ?
(a)294
(b)318
(c)283
(d)311
(e)324
Q6. 2, 25, 54, ?, 122, 163
(a)66
(b)85
(c)94
(d)88
(e)80
Q7. 2, 9, 30, 93, ?, 849
(a)282
(b)344
(c)358
(d)394
(e)388
Q8. 1500, 3000, ?, 2000, 1000, 400
(a)3000
(b)4000
(c)4500
(d)5500
(e)2500
Q9. 2, 4, 11, 37, ?, 769
(a)456
(b)126
(c)411
(d)239
(e)153
Q10. 178, ?, 186, 198, 218, 248
(a)179
(b)180
(c)182
(d)184
(e)183
Q11. 531, ?, 471, 423, 363, 291
(a)481
(b)492
(c)524
(d)507
(e)525
Q12. ?, 48, 100, 180, 294, 448
(a)18
(b)24
(c)12
(d)32
(e)36
Q13. 25, 46, 77, 118, ?, 230
(a)162
(b)171
(c)169
(d)183
(e)187
Q14. 169, 1331, ?, 343, 25, 27
(a)100
(b)1000
(c)49
(d)729
(e)81
Q15. 3, 2, 3, 8, ?, 296
(a)42
(b)36
(c)48
(d)24
(e)64
Solutions