Home Quantitative Aptitude Number Series Number Series-Test 7

Number Series-Test 7

Number Series

Online Mock Tests 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 7

Subject :- Quantitative Aptitude

Chapter :- Number Series-Test 7

Questions :- 25

Start quiz button

Question 1 of 25

1. Question
1 points
Directions : In each of these questions a number series is given. In each series only one number is wrong. Find out the wrong number.

50 51 47 56 42 65 29
- 51
- 47
- 56
- 42
- 65
Correct

The series is 50 + 1^2 = 51, 51 – 2^2 = 47, 47 + 3^2 = 56, 56 – 4^2 = 40, 40 + 5^2 = 65, 65 –
6^2 = 29.
Hence, there should be 40 in place of 42.

Incorrect

The series is 50 + 1^2 = 51, 51 – 2^2 = 47, 47 + 3^2 = 56, 56 – 4^2 = 40, 40 + 5^2 = 65, 65 –
6^2 = 29.
Hence, there should be 40 in place of 42.
Question 2 of 25

2. Question
1 points
3 9 23 99 479 2881 20159
- 9
- 23
- 99
- 479
- 2881
Correct

The series is 3 × 2 + 3 = 9, 9 × 3 – 4 = 23, 23 × 4 + 5 = 97, 97 × 5 – 6 = 479, 479 × 6 + 7 =
2881, 2881 × 7 – 8 = 20159
Hence, there should be 97 in place of 99.

Incorrect

The series is 3 × 2 + 3 = 9, 9 × 3 – 4 = 23, 23 × 4 + 5 = 97, 97 × 5 – 6 = 479, 479 × 6 + 7 =
2881, 2881 × 7 – 8 = 20159
Hence, there should be 97 in place of 99.
Question 3 of 25

3. Question
1 points
7 4 6 9 20 52.5 160.5
- 6
- 4
- 20
- 9
- 5
Correct

The series is x0.5 + 0.5, x1 + 1, x 1.5 + 1.5, x 2 + 2, x 2.5 + 2.5, x 3 + 3…
Hence, there should be 5 in place of 6.

Incorrect

The series is x0.5 + 0.5, x1 + 1, x 1.5 + 1.5, x 2 + 2, x 2.5 + 2.5, x 3 + 3…
Hence, there should be 5 in place of 6.
Question 4 of 25

4. Question
1 points
1 3 6 11 20 39 70
- 3
- 39
- 11
- 20
- 6
Correct

The series is 1 × 2 + 1 = 3, 3 × 2 + 0 = 6, 6 × 2 – 1 = 11, 11 × 2 – 2 = 20, 20 × 2 – 3 = 37, 37× 2 – 4 = 70.
Hence, there should be 37 in place of 39.

Incorrect

The series is 1 × 2 + 1 = 3, 3 × 2 + 0 = 6, 6 × 2 – 1 = 11, 11 × 2 – 2 = 20, 20 × 2 – 3 = 37, 37× 2 – 4 = 70.
Hence, there should be 37 in place of 39.
Question 5 of 25

5. Question
1 points
2 13 27 113 561 3369 23581
- 27
- 13
- 113
- 561
- 3369
Correct

The series is 2 × 2 + 7 = 11, 11 × 3 – 6 = 27, 27 × 4 + 5, = 113, 113 × 5 – 4 = 561, 561 × 6 +3 = 3369, 3369 × 7 – 2 = 23581.
Hence, there should be 11 in place of 13.

Incorrect

The series is 2 × 2 + 7 = 11, 11 × 3 – 6 = 27, 27 × 4 + 5, = 113, 113 × 5 – 4 = 561, 561 × 6 +3 = 3369, 3369 × 7 – 2 = 23581.
Hence, there should be 11 in place of 13.
Question 6 of 25

6. Question
1 points
7 16 27 40 46
- 7
- 16
- 27
- 40
- 46
Correct

The series is 5 × 1 + 2 = 7, 6 × 2 + 4 = 16, 7 × 3 + 6 = 27, 8 × 4 + 8 = 40, 9 × 5 + 10 = 55.
Hence, there should be 55 in place of 46.
Alternate Method: +9, +11, +13, +15

Incorrect

The series is 5 × 1 + 2 = 7, 6 × 2 + 4 = 16, 7 × 3 + 6 = 27, 8 × 4 + 8 = 40, 9 × 5 + 10 = 55.
Hence, there should be 55 in place of 46.
Alternate Method: +9, +11, +13, +15
Question 7 of 25

7. Question
1 points
729 1331 2497 3375 4913
- 729
- 1331
- 3375
- 2497
- 4913
Correct

The series is 9^3, 11^3, 13^3, 15^3, 17^3,
Hence, there should be 2197 in place of 2497.

Incorrect

The series is 9^3, 11^3, 13^3, 15^3, 17^3,
Hence, there should be 2197 in place of 2497.
Question 8 of 25

8. Question
1 points
80 119 166 221 223
- 80
- 119
- 166
- 192
- 223
Correct

The series is 9^2 – 1, 11^2 – 2, 13^2 – 3, 15^2 – 4, 17^2 – 5,
Hence, there should be 284 in place of 223.

Incorrect

The series is 9^2 – 1, 11^2 – 2, 13^2 – 3, 15^2 – 4, 17^2 – 5,
Hence, there should be 284 in place of 223.
Question 9 of 25

9. Question
1 points
8 8.5 11.5 14 17
- 8
- 8.5
- 11.5
- 14
- 17
Correct

The series is 8 + 1.5 = 9.5, 9.5 + 2 = 11.5, 11.5 + 2.5 = 14, 14 + 3 = 17
Hence, there should be 9.5 in place of 8.5.

Incorrect

The series is 8 + 1.5 = 9.5, 9.5 + 2 = 11.5, 11.5 + 2.5 = 14, 14 + 3 = 17
Hence, there should be 9.5 in place of 8.5.
Question 10 of 25

10. Question
1 points
439 778 1456 2812 5624
- 439
- 778
- 1456
- 2812
- 5624
Correct

The series is +339, +678, +1356, +2712,
Hence, there should be 5524 in place of 5624.

Incorrect

The series is +339, +678, +1356, +2712,
Hence, there should be 5524 in place of 5624.
Question 11 of 25

11. Question
1 points
17, 36, 132, 635, 3500, 21750, 153762
- 17
- 36
- 132
- 635
- 3500
Correct

The series is (17 + 1^3) × 2, (36 + 2^3) × 3, (132 + 3^3) × 4, (636 + 4^3) × 5

The number series should be 636 in the place of 635.

Incorrect

The series is (17 + 1^3) × 2, (36 + 2^3) × 3, (132 + 3^3) × 4, (636 + 4^3) × 5

The number series should be 636 in the place of 635.
Question 12 of 25

12. Question
1 points
17, 20, 46, 147, 599, 3015, 18018
- 20
- 46
- 599
- 147
- 3015
Correct

The series is ×1 + 3, ×2 + 6, ×3 + 9, ×4 + 12, ×5 + 15

The number series should be 600 in the place of 599.

Incorrect

The series is ×1 + 3, ×2 + 6, ×3 + 9, ×4 + 12, ×5 + 15

The number series should be 600 in the place of 599.
Question 13 of 25

13. Question
1 points
90, 135, 286, 750, 2160, 6405, 19155
- 90
- 750
- 6405
- 286
- 2160
Correct

The series is (90-45) × 3, (135-40) × 3, (285-35) × 3, (750-30) × 3, (2160-25) × 3,…

The number series should be 285 in the place of 286.

Incorrect

The series is (90-45) × 3, (135-40) × 3, (285-35) × 3, (750-30) × 3, (2160-25) × 3,…

The number series should be 285 in the place of 286.
Question 14 of 25

14. Question
1 points
9, 14, 40, 129, 536, 2705, 16260
- 14
- 40
- 536
- 9
- 29
Correct

The series is ×1 + 5, ×2 + 10, ×3 + 15, ×4 + 20, ×5 + 25

The number series should be 38 in the place of 40.

Incorrect

The series is ×1 + 5, ×2 + 10, ×3 + 15, ×4 + 20, ×5 + 25

The number series should be 38 in the place of 40.
Question 15 of 25

15. Question
1 points
8, 18, 64, 272, 1395, 8424, 59045
- 18
- 8
- 272
- 1395
- 64
Correct

The series is (8+1) × 2, (18+3) × 3, (63+5) × 4, (272+7) × 5

The number series should be 63 in the place of 64.

Incorrect

The series is (8+1) × 2, (18+3) × 3, (63+5) × 4, (272+7) × 5

The number series should be 63 in the place of 64.
Question 16 of 25

16. Question
1 points
38, 49, 62, 72, 77, 91, 101
- 49
- 72
- 77
- 91
- 38
Correct

The series is,
38 = 3+8 = 11 = 38 +11 = 49
49 = 4+9 = 13 = 49 +13 = 62
62 = 6+2 = 8 = 62 + 8 = 70 ≠ 72
70 = 7+0 = 7 = 70+ 7 = 77
77 = 7+7 = 14 = 77+14 = 91
91 = 9+1 = 10 = 91+10 = 101
Hence, 72 is the wrong number.

Incorrect

The series is,
38 = 3+8 = 11 = 38 +11 = 49
49 = 4+9 = 13 = 49 +13 = 62
62 = 6+2 = 8 = 62 + 8 = 70 ≠ 72
70 = 7+0 = 7 = 70+ 7 = 77
77 = 7+7 = 14 = 77+14 = 91
91 = 9+1 = 10 = 91+10 = 101
Hence, 72 is the wrong number.
Question 17 of 25

17. Question
1 points
47, 44, 45, 46, 33, 57, 3, 88
- 44
- 57
- 46
- 33
- 47
Correct

First series 47, 45, 33, 3
47-(1×2) = 45
45-(3×4) = 33
33- (5×6) = 3
Second series 44, 46, 57, 88
44 + (1×2) = 46
46 + (3×4) = 58 ≠ 57
58 + (5×6) = 88
Hence, 57 is the wrong answer.

Incorrect

First series 47, 45, 33, 3
47-(1×2) = 45
45-(3×4) = 33
33- (5×6) = 3
Second series 44, 46, 57, 88
44 + (1×2) = 46
46 + (3×4) = 58 ≠ 57
58 + (5×6) = 88
Hence, 57 is the wrong answer.
Question 18 of 25

18. Question
1 points
1, 8, 66, 460, 2758, 13785, 55146
- 460
- 2758
- 66
- 8
- 55146
Correct

1 8 66 460 2758 13785 55146
Here 1 × 9 – 1 = 8; 8 × 8 + 2 = 66; 66 × 7 – 3 = 459;
459 × 6 + 4 = 2758; 2758 × 5 – 5 = 13785; 13785
× 4 + 6 = 55146

Incorrect

1 8 66 460 2758 13785 55146
Here 1 × 9 – 1 = 8; 8 × 8 + 2 = 66; 66 × 7 – 3 = 459;
459 × 6 + 4 = 2758; 2758 × 5 – 5 = 13785; 13785
× 4 + 6 = 55146
Question 19 of 25

19. Question
1 points
56, 57, 48, 73, 24, 105, -10
- 57
- 73
- 105
- -10
- 24
Correct

56 57 48 73 24 105 -10
Here 56 +1^2 = 57;
57 – 3^2 = 48; 48+ 5^2 = 73; 73- 7^2 = 24;
24 + 9^2 = 105; 105 -11^2 = -16

Incorrect

56 57 48 73 24 105 -10
Here 56 +1^2 = 57;
57 – 3^2 = 48; 48+ 5^2 = 73; 73- 7^2 = 24;
24 + 9^2 = 105; 105 -11^2 = -16
Question 20 of 25

20. Question
1 points
2, 2, 13, 59, 363, 2519, 20161
- 13
- 20161
- 2519
- 59
- 363
Correct

2 2 13 59 363 2519 20161
Here 2 × 3 – 4 = 2; 2 × 4 + 5 = 13;
13 × 5 – 6 = 59; 59 × 6 + 7 = 361;
361 × 7 – 8 = 2519; 2519 × 8 + 9 = 20161

Incorrect

2 2 13 59 363 2519 20161
Here 2 × 3 – 4 = 2; 2 × 4 + 5 = 13;
13 × 5 – 6 = 59; 59 × 6 + 7 = 361;
361 × 7 – 8 = 2519; 2519 × 8 + 9 = 20161
Question 21 of 25

21. Question
1 points
3, 1, 3, 0.7, 3, 0.6, 3, 0.5, 3
- 1
- 7
- 6
- 3
- 5
Correct

3 1 3 0.7 3 0.6 3
3 × 1/3 = 1;

1 × 3 = 3;
3 × 1/4 = 0.75;
0.75 × 4 = 3;
3 × 1/5 = 0.6;
0.6 × 5 = 3;
3 × 1/6 = 0.5;
0.5 × 6 = 3.

Incorrect

3 1 3 0.7 3 0.6 3
3 × 1/3 = 1;

1 × 3 = 3;
3 × 1/4 = 0.75;
0.75 × 4 = 3;
3 × 1/5 = 0.6;
0.6 × 5 = 3;
3 × 1/6 = 0.5;
0.5 × 6 = 3.
Question 22 of 25

22. Question
1 points
2, 6, 13, 26, 54, 100, 197
- 26
- 100
- 54
- 197
- 13
Correct

2 6 13 26 54 100 197
Here 2 × 2 + 2 = 6; 6 × 2 + 1 = 13;
13 × 2 + 0 = 26; 26 × 2 – 1 = 51;
51 × 2 – 2 = 100; 100 × 2 – 3 = 197

Incorrect

2 6 13 26 54 100 197
Here 2 × 2 + 2 = 6; 6 × 2 + 1 = 13;
13 × 2 + 0 = 26; 26 × 2 – 1 = 51;
51 × 2 – 2 = 100; 100 × 2 – 3 = 197
Question 23 of 25

23. Question
1 points
0, 1, 9, 36, 99, 225, 441
- 9
- 36
- 99
- 225
- 441
Correct

The differences are
0 1 9 36 99 225 441
$0^{2} 1^{2} 3^{2} 6^{2} 10^{2} 15^{2} 21^{2}$

Incorrect

The differences are
0 1 9 36 99 225 441
$0^{2} 1^{2} 3^{2} 6^{2} 10^{2} 15^{2} 21^{2}$
Question 24 of 25

24. Question
1 points
2, 3, 5, 8, 14, 23, 41, 69
- 5
- 8
- 14
- 41
- 69
Correct

The series is an alternate series, having
S 1 = 2 5 14 41; ×3 – 1 in each term
S 2 = 3 8 23 69; ×3 – 1 in each term

Incorrect

The series is an alternate series, having
S 1 = 2 5 14 41; ×3 – 1 in each term
S 2 = 3 8 23 69; ×3 – 1 in each term
Question 25 of 25

25. Question
1 points
5, 10, 17, 27, 37, 50, 65
- 10
- 17
- 37
- 27
- 50
Correct

Incorrect

Online Exam

Ekvij provides online exam in Quantitative Aptitude, Reasoning, English,Computers,General Knowledge for the preparation of IBPS BANK PO/Clerical,SBI,RRB,SSC,LIC,UPSC-CSAT,SCRA.MAT,CMAT,MBA,SNAP,CAT,NTSE,CLAT

Number Series

Number Series-Test 7

Quiz-summary

Information

Results

Categories

1. Question

2. Question

3. Question

4. Question

5. Question

6. Question

7. Question

8. Question

9. Question

10. Question

11. Question

12. Question

13. Question

14. Question

15. Question

16. Question

17. Question

18. Question

19. Question

20. Question

21. Question

22. Question

23. Question

24. Question

25. Question

Online Exam