Directions (1-15): In each of the following series below only one number is missing. Please understand the data carefully and find the missing number.
Q1.12, 22, 33, 45, ?, 72
(a)58
(b)66
(c)54
(d)60
(e)63
Q2. 7, 15, ?, 59, 117, 235
(a)21
(b)43
(c)29
(d)55
(e)35
Q3. 1, 28, 92, 217, ?, 776
(a)387
(b)433
(c)513
(d)612
(e)556
Q4. 22.5, 45, ?, 60, 12, 72
(a)22.5
(b)135
(c)50
(d)15
(e)90
Q5. 5.5, 9, 12.5, 16, 19.5, ?
(a)22
(b)24.5
(c)22.5
(d)23.5
(e)23
Q6. 169, 1331, ?, 125, 9, 8
(a)81
(b)343
(c)49
(d)729
(e)100
Q7. ?, 4, 18, 48, 100, 180
(a)0
(b)1
(c)2
(d)-1
(e)-2
Q8. 7, 4, 5, 12, ?, 424
(a)42
(b)52
(c)108
(d)214
(e)94
Q9. 1, 5, 25, 125, ?, 3125
(a)2025
(b)525
(c)725
(d)1125
(e)625
Q10. 145, 157, 133, ?, 121,181
(a)186
(b)172
(c)144
(d)169
(e)152
Q11. 20, ?, 28, 40, 60, 90
(a)21
(b)22
(c)24
(d)26
(e)25
Q12. 200, 187, 167, ?, 106, 65
(a)144
(b)128
(c)155
(d)140
(e)132
Q13. 9600, ?, 120, 20, 5, 2.5
(a)960
(b)1200
(c)1600
(d)4800
(e)3200
Q14. 18, 20, 43, 133, ?, 2691
(a)456
(b)610
(c)532
(d)618
(e)537
Q15. 4, 6, 13, 27, 50, ?
(a)92
(b)72
(c)84
(d)68
(e)102
Solutions