Number series: practice set (15 questions)

Entraînement · Psychometric tests (all recruitment) · 15 questions

15 number series questions, each with a worked explanation.

KounKour practice: psychometric-style questions for any recruitment test (not an official exam). Answers computed and checked.

Les réponses et la correction s’affichent après avoir répondu au QCM.

1. Which number completes the series: 11, 17, 23, 29, 35, … ?

   • 51
   • 41
   • 42
   • 40

2. Which number completes the series: 8, 9, 11, 14, 18, … ?

   • 32
   • 22
   • 23
   • 26

3. Which number completes the series: 1, 3, 7, 15, 31, … ?

   • 62
   • 64
   • 63
   • 70

4. Which number completes the series: 1, 6, 7, 13, 20, … ?

   • 45
   • 25
   • 34
   • 33

5. Which number completes the series: 6, 9, 18, 21, 42, … ?

   • 60
   • 46
   • 55
   • 45

6. Which number completes the series: 5, 39, 8, 38, 11, … ?

   • 41
   • 37
   • 33
   • 38

7. Which number completes the series: 4, 9, 19, 39, 79, … ?

   • 159
   • 143
   • 175
   • 207

8. Which number completes the series: 5, 10, 20, 40, 80, … ?

   • 211
   • 160
   • 126
   • 177

9. Which number completes the series: 5, 30, 8, 28, 11, … ?

   • 23
   • 26
   • 32
   • 35

10. Which number completes the series: 25, 36, 49, 64, 81, … ?

    • 100
    • 111
    • 133
    • 78

11. Which number completes the series: 2, 26, 4, 24, 6, … ?

    • 22
    • 23
    • 31
    • 25

12. Which number completes the series: 5, 15, 45, 135, 405, … ?

    • 971
    • 1093
    • 1215
    • 1216

13. Which number completes the series: 5, 9, 18, 22, 44, … ?

    • 48
    • 47
    • 63
    • 53

14. Which number completes the series: 4, 9, 16, 25, 36, … ?

    • 64
    • 39
    • 59
    • 49

15. Which number completes the series: 3, 6, 12, 24, 48, … ?

    • 76
    • 86
    • 96
    • 106

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