Directions (1-15): Find the value of question mark(?) in the following number series below.
Q1.22, 33, 45, 58, 72, ?
(a)87
(b)98
(c)111
(d)119
(e)93
Q2. 1.5, 4, 7, 15, 29, ?
(a)78
(b)43
(c)59
(d)55
(e)66
Q3. 92, 217, 433, 776, 1288, ?
(a)2456
(b)2110
(c)2017
(d)1987
(e)1845
Q4. ?, 22.5, 45, 15, 60, 12
(a)10
(b)5
(c)15
(d)22.5
(e)12.5
Q5. 12.5, 16, 19.5, 23, ?, 30
(a)27
(b)24.5
(c)28
(d)24.5
(e)26.5
Q6. 361, ?, 169, 1331, 49, 125
(a)324
(b)343
(c)4913
(d)289
(e)3375
Q7. ?, 100, 180, 294, 448, 648
(a)48
(b)30
(c)20
(d)54
(e)66
Q8. 27, 7, 4, 5, 12, ?
(a)84
(b)52
(c)108
(d)72
(e)94
Q9. 5, 25, 125, 625, ?, 15625
(a)2025
(b)2525
(c)3225
(d)3000
(e)3125
Q10. ?, 169, 121, 181, 109, 193
(a)102
(b)121
(c)144
(d)133
(e)152
Q11.?, 40, 60, 90, 132, 188
(a)12
(b)28
(c)20
(d)18
(e)25
Q12.206, 200, 187, 167, 140, ?
(a)84
(b)120
(c)90
(d)106
(e)112
Q13. 9600, ?, 120, 20, 5, 2.5
(a)960
(b)1200
(c)1600
(d)4800
(e)3200
Q14. 3, 5, 13, 43, ?, 891
(a)256
(b)310
(c)232
(d)118
(e)177
Q15. 8, 10, 17, 31, 54, ?
(a)92
(b)72
(c)88
(d)68
(e)102
Solutions













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