Directions (1 – 15): In each of these questions a number series is given. In each series only one number is wrong. Find out the wrong number.
Q1. 380, 331, 295, 275, 254, 245, 241
(a)380
(b)275
(c)295
(d)245
(e)241
Q2. 225, 227.5, 232.5, 242, 250, 262.5, 277.5
(a)225
(b)232.5
(c)250
(d)242
(e)277.5
Q3. 169, 1331, 100, 343, 25, 27, 1
(a)343
(b)1331
(c)27
(d)169
(e)100
Q4. 1, 1, 2, 4.5, 12, 30, 93
(a)12
(b)4.5
(c)2
(d)30
(e)93
Q5. 216, 36, 180, 45, 140, 67.5, 67.5
(a)36
(b)216
(c)140
(d)67.5
(e)180
Q6. 340, 344, 348, 354, 362, 372, 384
(a)340
(b)344
(c)348
(d)354
(e)372
Q7. 720, 709, 687, 654, 610, 555, 490
(a)720
(b)610
(c)687
(d)709
(e)490
Q8. 715, 700, 750, 675, 775, 650, 800
(a)650
(b)800
(c)750
(d)715
(e)700
Q9. 11, 23, 45, 89, 177, 353, 705
(a)23
(b)11
(c)705
(d)177
(e)353
Q10. 118, 126, 142, 150, 166, 174, 192
(a)166
(b)150
(c)192
(d)118
(e)174
Q11. 320, 322, 324, 342, 390, 490, 670
(a)670
(b)320
(c)342
(d)390
(e)322
Q12. 432, 470, 520, 573, 638, 712, 895
(a)520
(b)432
(c)795
(d)712
(e)573
Q13. 13, 14, 27, 41, 68, 109, 177, 238
(a)27
(b)109
(c)68
(d)238
(e)27
Q14. 250, 252, 264, 294, 350, 440, 576
(a)252
(b)576
(c)294
(d)350
(e)440
Q15. 1050, 1059, 1075, 1100, 1138, 1185, 1249
(a)1185
(b)1050
(c)1138
(d)1249
(e)1075
Solutions
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