Online Quiz in Number Series For Quantitative Aptitude for Competitive exams like IBPS BANK PO/Clerical,SBI,RRB,SSC,LIC,UPSC-CSAT,SCRA.MAT,CMAT,MBA,SNAP,CAT,NTSE,CLAT
Number Series-Test 8
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Subject :- Quantitative Aptitude
Chapter :- Number Series-Test 8
Questions :- 25
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45-43= 2
43-42=1
Differences between the consecutive numbers are in Geometric Progression (G.P)
Hence, 44 is the wrong number.
Incorrect
73, 57, 49, 44, 43,42
73-57= 16
57-49=8
49-45= 4
45-43= 2
43-42=1
Differences between the consecutive numbers are in Geometric Progression (G.P)
Hence, 44 is the wrong number.
Question 6 of 25
6. Question
1 points
1527, 1185, 985, 865, 823, 817
Correct
The series is
1527 — (192 -19) = 1185,
1185 — (152 — 15) =975,
975— (112— 11) = 865,
865 — (72— 7) = 823,
823 — (32 — 3) = 817
There should be 975 in place of 985.
Incorrect
The series is
1527 — (192 -19) = 1185,
1185 — (152 — 15) =975,
975— (112— 11) = 865,
865 — (72— 7) = 823,
823 — (32 — 3) = 817
There should be 975 in place of 985.
Question 7 of 25
7. Question
1 points
110, 106, 204, 608, 2384, 11900
Correct
The series is 110 x 1 — 4 = 106,
106 x 2 — 8 = 204, 204 x 3 — 12 = 600, 600 x 4 — 16 = 2384, 2384 x 5 — 20 = 11900
There should be 600 in place of 608.
Incorrect
The series is 110 x 1 — 4 = 106,
106 x 2 — 8 = 204, 204 x 3 — 12 = 600, 600 x 4 — 16 = 2384, 2384 x 5 — 20 = 11900
There should be 600 in place of 608.
Question 8 of 25
8. Question
1 points
71, 90, 128, 185, 261, 365
Correct
The series is
71 + 19 = 90, 90 + 38 = .128, 128 + 57 = 185, 185 + 76 = 261, 261 + 95 = 356 Hence there should be 356 in place of 365.
Incorrect
The series is
71 + 19 = 90, 90 + 38 = .128, 128 + 57 = 185, 185 + 76 = 261, 261 + 95 = 356 Hence there should be 356 in place of 365.
Question 9 of 25
9. Question
1 points
8, 17.5, 64.75, 157.375, 561.3125, 1400.78125
Correct
The series is
8 x 2.5 — 2.5 = 17.5,
17.5 x 3.5 + 3.5 = 64.75,
64.75 x 2.5 — 2.5 = 159.375,
159.375 x 3.5 + 3.5 = 561.3125,
561.3125 x 2.5 — 2.5 = 1400.78125, …
Hence there should be 159.375 in place of 157.375.
Incorrect
The series is
8 x 2.5 — 2.5 = 17.5,
17.5 x 3.5 + 3.5 = 64.75,
64.75 x 2.5 — 2.5 = 159.375,
159.375 x 3.5 + 3.5 = 561.3125,
561.3125 x 2.5 — 2.5 = 1400.78125, …
Hence there should be 159.375 in place of 157.375.
Question 10 of 25
10. Question
1 points
76, 75, 142, 399, 1530, 7535
Correct
The series is
76 x 1 — 13= 75,
75 x 2 — 23 = 142,
142 x 3 — 33 = 399,
399 x 4 — 43 = 1532,
1532 x 5 — 53 = 7535, …
Hence there should be 1532 in place of 1530.
Incorrect
The series is
76 x 1 — 13= 75,
75 x 2 — 23 = 142,
142 x 3 — 33 = 399,
399 x 4 — 43 = 1532,
1532 x 5 — 53 = 7535, …
Hence there should be 1532 in place of 1530.
Question 11 of 25
11. Question
1 points
84, 138, 192, 270, 348, 434
Correct
The series is
21 x 4 = 84,
23 x 6 = 138,
25 x 8= 200,
27 x 10 = 270,
29 x 12 = 348,
31 x 14 = 434, …
Hence there should be 200 in place, of 192.
Therefore the wrong number is 192.
Incorrect
The series is
21 x 4 = 84,
23 x 6 = 138,
25 x 8= 200,
27 x 10 = 270,
29 x 12 = 348,
31 x 14 = 434, …
Hence there should be 200 in place, of 192.
Therefore the wrong number is 192.
Question 12 of 25
12. Question
1 points
88, 88, 176, 530, 2112, 10560
Correct
Incorrect
Question 13 of 25
13. Question
1 points
2400, 1295, 625, 255, 80, 15
Correct
The series is 74 — 1 = 2400,
64 — 1 = 1295, 54— 1 = 624, 44 – 1 = 255, 34— 1 = 80, 24 — 1 = 15, …
Hence there should be 624 in place of 625.
Therefore, the wrong number is 625.
Incorrect
The series is 74 — 1 = 2400,
64 — 1 = 1295, 54— 1 = 624, 44 – 1 = 255, 34— 1 = 80, 24 — 1 = 15, …
Hence there should be 624 in place of 625.
Therefore, the wrong number is 625.
Question 14 of 25
14. Question
1 points
127 470 686 811 875 885
Correct
The series is +73, +63, +53, +43, +33, +23, …
The series is 127 + 343 = 470, 470 + 216 = 686, 686 + 125 = 811, 811 + 64 = 875, 875 + 27 =902,
Therefore it should be 902 in place of 885.
Incorrect
The series is +73, +63, +53, +43, +33, +23, …
The series is 127 + 343 = 470, 470 + 216 = 686, 686 + 125 = 811, 811 + 64 = 875, 875 + 27 =902,
Therefore it should be 902 in place of 885.
Question 15 of 25
15. Question
1 points
1296 652 328 169 88.5 48.25
Correct
The series is ÷2 + 4 (repeated)
1296 ÷ 2 + 4 = 652, 652 ÷ 2 + 4 = 330, 330 ÷ 2 + 4 = 169, 169 ÷ 2 + 4 = 88.5, 88.5 ÷ 2 + 4 =48.75, …
Therefore it should be 330 in place of 328.
Incorrect
The series is ÷2 + 4 (repeated)
1296 ÷ 2 + 4 = 652, 652 ÷ 2 + 4 = 330, 330 ÷ 2 + 4 = 169, 169 ÷ 2 + 4 = 88.5, 88.5 ÷ 2 + 4 =48.75, …
Therefore it should be 330 in place of 328.
Question 16 of 25
16. Question
1 points
2 5 15 131 530 13257
Correct
The series is 2 x 1Λ2 + 3= 5, 5 × 2 + 4 = 14, 14 x 3Λ2 + 5 = 131, 131 x 4 + 6 = 530, 530 x 5Λ2 + 7
= 13257,……
Therefore it should be 14 in place of 15.
Incorrect
The series is 2 x 1Λ2 + 3= 5, 5 × 2 + 4 = 14, 14 x 3Λ2 + 5 = 131, 131 x 4 + 6 = 530, 530 x 5Λ2 + 7
= 13257,……
Therefore it should be 14 in place of 15.
Question 17 of 25
17. Question
1 points
508 640 776 925 1092 1283
Correct
The series is 508 + 131 = 639, 639 + 137 = 776, 776 + 149 = 925, 925 + 167 = 1092, 1092 +
191 = 1283, …
Hence it ‘should be 639 in place of 640.
Incorrect
The series is 508 + 131 = 639, 639 + 137 = 776, 776 + 149 = 925, 925 + 167 = 1092, 1092 +
191 = 1283, …
Hence it ‘should be 639 in place of 640.
Question 18 of 25
18. Question
1 points
1325 714 318 90 -18 -54
Correct
The series is
Hence it should be 1326 in place of 1325.
Incorrect
The series is
Hence it should be 1326 in place of 1325.
Question 19 of 25
19. Question
1 points
34/15, 76/35, 130/63, 202/99, 290/143, 394/195
Correct
The series follows:
Numerator = 2 x Denominator + 4
So, 76/35 should be replaced by (35×2+4) / 35 = 74/35
Incorrect
The series follows:
Numerator = 2 x Denominator + 4
So, 76/35 should be replaced by (35×2+4) / 35 = 74/35
Question 20 of 25
20. Question
1 points
5930, 4900, 7056, 3969, 8281, 3136
Correct
The series is
5929, 4900, 7056, 3969, 8281, 3136
Hence there should be 5929 in place of 5930
Incorrect
The series is
5929, 4900, 7056, 3969, 8281, 3136
Hence there should be 5929 in place of 5930
Question 21 of 25
21. Question
1 points
85, 88, 182, 550, 2232, 11175
Correct
The series is 85 x 1 + 3 = 88,
88 x 2 + 6 = 182, 182 x 3 + 9 = 555, 555 x 4 + 12 = 2232, 2232 x 5 + 15 = 11175,…..
Hence there should be 555 in place of 550.
Incorrect
The series is 85 x 1 + 3 = 88,
88 x 2 + 6 = 182, 182 x 3 + 9 = 555, 555 x 4 + 12 = 2232, 2232 x 5 + 15 = 11175,…..
Hence there should be 555 in place of 550.
Question 22 of 25
22. Question
1 points
46, 300, 430, 494, 526, 542
Correct
Move from right to left. The series is
-16, -32, -64, -128, -256, …..
Hence there should be 302 in place of 300.
Incorrect
Move from right to left. The series is
-16, -32, -64, -128, -256, …..
Hence there should be 302 in place of 300.
Question 23 of 25
23. Question
1 points
11 12 28 93 310 1965
Correct
The series is
There should be 388 in place of 310.
Incorrect
The series is
There should be 388 in place of 310.
Question 24 of 25
24. Question
1 points
3 20 87 392 2025 12246
Correct
(3 + 7) x 2 = 20, (20 + 9) x 3 = 87, (87 + 11) x 4 = 392, (392 + 13) x 5 = 2025, (2025 +15) x 6 = 12240,
Therefore, there should be 12240 in place of 12246.
Incorrect
(3 + 7) x 2 = 20, (20 + 9) x 3 = 87, (87 + 11) x 4 = 392, (392 + 13) x 5 = 2025, (2025 +15) x 6 = 12240,
Therefore, there should be 12240 in place of 12246.
Question 25 of 25
25. Question
1 points
12 6.8 7.5 12.75 27.5 71.25
Correct
The series is 12 x 0.5 + 0.5 = 6.5, 6.5 x 1 + 1 = 7.5, 7.5 x 1.5 + 1.5 = 12.75, 12.75 x 2 + 2
= 27.5, 27.5 x 2.5 + 2.5 = 71.25, …
Therefore, there should be 6.5 in place of 6.8.
Incorrect
The series is 12 x 0.5 + 0.5 = 6.5, 6.5 x 1 + 1 = 7.5, 7.5 x 1.5 + 1.5 = 12.75, 12.75 x 2 + 2
= 27.5, 27.5 x 2.5 + 2.5 = 71.25, …
