Chapterwise Quantitative Aptitude Quiz from Previous Paper for IBPS Clerk 2017 – Number Series

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Hello and welcome to exampundit. Here is a set of Chapterwise Quantitative Aptitude Quiz from Previous Paper for IBPS Clerk 2017 based on Series.

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Directions (Q. 1-10): What should come in place of question mark (?) in the following number series?

1. 1 1 2 6 ? 120
1) 24 2) 60 3) 100 4) 30 5) None of these

2. 7 8 16 43 ? 232
1) 204 2) 107 3) 119 4) 89 5) None of these

3. 4 13 17 ? 30 39
1) 29 2) 21 3) 26 4) 19 5) None of these

4. 982 977 952 827 822 ?
1) 779 2) 817 3) 789 4) 697 5) None of these

5. 41472 5184 576 72 8 ?
1) 0 2) 9 3) 1 4) 8 5) None of these

6. ? 7800 1560 390 130 65
1) 47120 2) 49900 3) 46800 4) 48350 5) None of these

7. 7 11 19 ? 67 131
1) 35 2) 23 3) 46 4) 51 5) None of these

8. 5 10 25 70 205 ?
1) 650 2) 670 3) 550 4) 610 5) None of these

9. 7 35 210 ? 6300 31500
1) 1040 2) 1060 3) 1080 4) 1030 5) None of these

10. 513 495 ? 462 447 433
1) 460 2) 491 3) 488 4) 478 5) None of these

 

Solutions:

1. The series is ×1, ×2, ×3, ×4, ×5,…
2. The series is +13, +23, +33, +43, +53,…
3. The series is +32, +22, +32, +22, +32…
4. The series is –51, –52, –53, –51, –52,…
5. The series is ÷8, ÷9, ÷8, ÷9, ÷8…

6. The series is ×6, ×5, ×4, ×3, ×2…

Hence, number = 7800 × 6 = 46800

7. The series is +22, +23, +24, +25, +26…

Hence, number = 19 + 24 = 19 + 16 = 35

8. The series is ×3 – 5

Hence, number = 205 × 3 – 5 = 615 – 5 = 610

9. The series is ×5, ×6, ×5, ×6, ×5…

Hence, number = 210 × 5 = 1050

10. The series is –18, –17, –16, –15, –14…

Hence, number = 495 – 17 = 478

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