Quantitative Reasoning Sequences and Series Online Test MCQs

Quantitative Reasoning Aptitude Test

Quantitative Reasoning tests are designed to assess a candidate’s numerical problem-solving skills, logic, and analytical thinking. Among the key areas, Sequences and Series form a crucial part of the syllabus in most aptitude and entrance exams, such as ETEA, NTS, ECAT, and university admissions tests.

Sequences and Series Test Online

Please wait...

 0%

Page 1 of 2

1. Find the 9th term of the sequence: 2, 5, 8, 11, ...

26

27

28

29

 Loading...

2. What is the 5th term of the geometric sequence: 1, 3, 9, 27...?

81

99

90

108

 Loading...

3. What is the next term in the sequence: 2, 4, 8, 16, ?

32

24

18

20

 Loading...

4. Find the sum of the first 3 terms of the geometric sequence: 4, 12, 36

52

48

60

64

 Loading...

5. In a geometric sequence, if a = 5 and r = 2, what is T4?

40

80

160

20

 Loading...

6. Which of the following is a geometric sequence?

2, 4, 6, 8

3, 6, 10, 15

5, 10, 20, 35

1, 2, 4, 8

 Loading...

7. In an arithmetic sequence if a = 2, d = 5, find T10

45

55

50

47

 Loading...

8. A geometric series has a = 3, r = 4. Find the 3rd term.

36

12

27

48

 Loading...

9. The sum of first n even numbers is:

n²

2n

n(n–1)

n(n+1)

 Loading...

10. What is the 3rd term of the sequence: 11, 9, 7, 5, ...?

5

7

9

11

 Loading...

11. What is the common ratio of the sequence: 1, 3, 9, 27?

5

2

3

4

 Loading...

12. What is the next term in the sequence: 1, 4, 9, 16, 25, ?

32

36

30

49

 Loading...

13. What is the next number in the series: 81, 27, 9, 3, ?

2

1

0

5

 Loading...

14. Which of the following is not an arithmetic sequence?

10, 20, 30, 40

5, 10, 20, 40

3, 6, 9, 12

7, 14, 21, 28

 Loading...

15. The 5th term of an arithmetic sequence is 20 and the common difference is 3. What is the first term?

5

8

11

14

 Loading...

16. The nth term of a sequence is Tn = n² + 1. What is T3?

9

8

10

12

 Loading...

17. What is the 6th term in the arithmetic sequence: 3, 7, 11, 15, ... ?

27

23

19

29

 Loading...

18. What is the common difference in the arithmetic sequence: 12, 17, 22, 27...?

4

6

5

3

 Loading...

19. If the sum of the first 4 terms of a geometric sequence is 30 and the terms are: 2, 4, 8, x. Find x.

20

18

14

16

 Loading...

20. The sum of the first 4 terms of 5, 10, 15, ... is:

40

60

50

30

 Loading...

21. If Tn = 4n – 1, find T6

25

23

22

24

 Loading...

22. In which sequence is the sum of the first n terms equal to n²?

2, 4, 8, 16

1, 4, 9, 16

1, 2, 3, 4

1, 3, 5, 7

 Loading...

23. A sequence has Tn = 5n. What is the 6th term?

35

40

25

30

 Loading...

24. Which of the following sequences has a common ratio of 0.5?

2, 4, 8

8, 4, 2, 1

5, 10, 20

1, 2, 3, 4

 Loading...

25. Which term of the sequence 5, 10, 15, 20, ... is 100?

18

15

25

20

 Loading...

Page 2 of 2

26. The sum of a geometric series is 31, and its terms are 1, 2, 4, 8, ... What is the last term?

8

64

32

16

 Loading...

27. What is the 7th term of the sequence where a = 4 and r = 2?

128

256

64

512

 Loading...

28. If the nth term of a sequence is given by Tn = 3n + 2, what is T5?

18

17

15

20

 Loading...

29. Which formula represents a geometric sequence?

Tn = n²

Tn = 2ⁿ

Tn = 2n

Tn = 3n + 1

 Loading...

30. What is the sum of the first 10 even numbers?

120

110

130

100

 Loading...

31. The 2nd term of a geometric sequence is 6 and the 4th term is 24. What is the common ratio?

4

√2

3

2

 Loading...

32. What is the formula for the sum of an arithmetic series?

Sₙ = n(a + l)/2

Sₙ = a + nd

Sₙ = arⁿ⁻¹

Sₙ = n²

 Loading...

33. If a sequence is: 5, 15, 45, 135, ..., what is the 6th term?

3645

7290

405

1215

 Loading...

34. Which sequence represents the formula Tn = 3n + 1?

3, 6, 9, 12

2, 4, 8, 16

4, 7, 10, 13

3, 5, 7, 9

 Loading...

35. Find the 4th term of Tn = 2n² – 3

15

13

14

16

 Loading...

36. What is the next term in the series: 0.5, 1.5, 4.5, 13.5...?

45

20.5

40.5

27

 Loading...

37. Find the sum of first 5 odd numbers.

25

20

30

15

 Loading...

38. If Tn = 7n – 4, what is T8?

52

54

58

56

 Loading...

39. What is the common difference in the sequence: –2, 1, 4, 7...?

3

5

4

2

 Loading...

40. Which of the following is an arithmetic sequence?

2, 4, 6, 8

10, 20, 40

1, 2, 4, 8

3, 9, 27

 Loading...

41. Sum of first 5 odd numbers is:

25

10

15

20

 Loading...

42. What is the sum of the first 6 terms of the sequence: 2, 4, 6, 8, 10, 12?

20

18

21

42

 Loading...

43. What is the sum of the first 10 natural numbers?

60

50

45

55

 Loading...

44. Which of the following is a decreasing geometric sequence?

5, 10, 15

10, 20, 40

100, 90, 80

64, 32, 16, 8

 Loading...

45. The nth term of a geometric sequence is Tn = 2ⁿ. What is T4?

12

8

10

16

 Loading...

46. Find the sum of first 4 terms of the geometric sequence: 1, 2, 4, 8

17

15

14

16

 Loading...

47. Find the 8th term of the sequence: 7, 14, 21, ...?

70

49

56

63

 Loading...

48. Find the 10th term of the geometric sequence: 2, 4, 8, 16, ...

256

512

2048

1024

 Loading...

49. If Tn = 6n – 5, find T3

19

17

15

13

 Loading...

50. What is the sum of 6 + 12 + 18 + 24 + 30?

90

84

96

100

 Loading...

 Loading...

• <<
• 1
• 2
• 3
• 4
• 5
• 6
• 7
• 8
• 9
• 10
• 11
• 12
• 13
• 14
• 15
• 16
• 17
• 18
• 19
• 20
• 21
• 22
• 23
• 24
• 25
• 26
• 27
• 28
• 29
• 30
• 31
• 32
• 33
• 34
• 35
• 36
• 37
• 38
• 39
• 40
• 41
• 42
• 43
• 44
• 45
• 46
• 47
• 48
• 49
• 50
• >>