Correct option is C
The series is increasing by 3 each time:
18 + 3 = 21
21 + 3 = 24
24 + 3 = 27
27 + 3 = 30
So, the next number is 30.
Correct answer is (c)30
All Courses
Question
Complete the series.
18, 21, 24, 27, (...)
Free Tests
Free
Must Attempt
RRB NTPC UG Level PYP (Held on 7 Aug 2025 S1)
English
100 Questions
100 Marks
90 Mins
EnglishFree
Must Attempt
CBT-1 Full Mock Test 1
English- 100 Questions
- 100 Marks
- 90 Mins
EnglishFree
Must Attempt
RRB Group D Full Mock Test 1
English- 100 Questions
- 100 Marks
- 90 Mins
EnglishSimilar Questions
- 1)Find the missing term in the series.4,27,16,125,36, ____ ? 64,729
- 2)
What should come in place of the question mark (?) in the given series?
88, 91, 97, 106, 118, ? - 3)
What should come in place of the question mark (?) in the given series?
3 6 11 18 ? - 4)
What should come in place of the question mark (?) in the given series?
321 323 327 333 341 ? - 5)
What should come in place of the question mark (?) in the given series?
48, 51, ?, 54, 42, 57, 39 - 6)
What should come in place of ‘?’ in the given series?
6, 14, 21, 29, 36, 44, ? - 7)
What should come in place of ? in the given series?
451, 338, 225, 112, -1, ? - 8)What is the next term in the series ？57，84，148，27, ____
- 9)
The missing number in the series 28, 33, 31 ?, 34,39 is
- 10)
Find the missing terms in the following series:
2, 15, 4, 12, 6, 7, ?, ?
Access ‘RRB JE’ Mock Tests with
- 60000+ Mocks and Previous Year Papers
- Unlimited Re-Attempts
- Personalised Report Card
- 500% Refund on Final Selection
- Largest Community
482k+ students have already unlocked exclusive benefits with Test Prime!
Suggested Test Series
RRB NTPC Under Graduate (CBT 1 + CBT 2) 2025-26 Mock Test
RRB NTPC Under Graduate (CBT 1 + CBT 2) 2025-26 Mock Test
1021 Tests + 2 Free Tests
RRB Group D 2025-26 Mock Test
RRB Group D 2025-26 Mock Test
954 Tests + 3 Free Tests
RRB ALP (CBT 1 + CBT 2 + Psycho) 2026 Mock Test
RRB ALP (CBT 1 + CBT 2 + Psycho) 2026 Mock Test
611 Tests + 2 Free Tests
Current Affairs Cracker for all SSC, Railway, Central & State Exams Mock Test
Current Affairs Cracker for all SSC, Railway, Central & State Exams Mock Test
569 Tests + 3 Free Tests
RRB NTPC Graduate (CBT 1 + CBT 2 + Psycho) 2025-26 Mock Test
RRB NTPC Graduate (CBT 1 + CBT 2 + Psycho) 2025-26 Mock Test
882 Tests + 3 Free Tests
Access ‘RRB JE’ Mock Tests with
- 60000+ Mocks and Previous Year Papers
- Unlimited Re-Attempts
- Personalised Report Card
- 500% Refund on Final Selection
- Largest Community
482k+ students have already unlocked exclusive benefits with Test Prime!
Suggested Test Series
RRB NTPC Under Graduate (CBT 1 + CBT 2) 2025-26 Mock Test
RRB NTPC Under Graduate (CBT 1 + CBT 2) 2025-26 Mock Test
1021 Tests + 2 Free Tests
RRB Group D 2025-26 Mock Test
RRB Group D 2025-26 Mock Test
954 Tests + 3 Free Tests
RRB ALP (CBT 1 + CBT 2 + Psycho) 2026 Mock Test
RRB ALP (CBT 1 + CBT 2 + Psycho) 2026 Mock Test
611 Tests + 2 Free Tests
Current Affairs Cracker for all SSC, Railway, Central & State Exams Mock Test
Current Affairs Cracker for all SSC, Railway, Central & State Exams Mock Test
569 Tests + 3 Free Tests
RRB NTPC Graduate (CBT 1 + CBT 2 + Psycho) 2025-26 Mock Test
RRB NTPC Graduate (CBT 1 + CBT 2 + Psycho) 2025-26 Mock Test
882 Tests + 3 Free Tests
Similar Questions
- 1)Find the missing term in the series.4,27,16,125,36, ____ ? 64,729
- 2)
What should come in place of the question mark (?) in the given series?
88, 91, 97, 106, 118, ? - 3)
What should come in place of the question mark (?) in the given series?
3 6 11 18 ? - 4)
What should come in place of the question mark (?) in the given series?
321 323 327 333 341 ? - 5)
What should come in place of the question mark (?) in the given series?
48, 51, ?, 54, 42, 57, 39 - 6)
What should come in place of ‘?’ in the given series?
6, 14, 21, 29, 36, 44, ? - 7)
What should come in place of ? in the given series?
451, 338, 225, 112, -1, ? - 8)What is the next term in the series ？57，84，148，27, ____
- 9)
The missing number in the series 28, 33, 31 ?, 34,39 is
- 10)
Find the missing terms in the following series:
2, 15, 4, 12, 6, 7, ?, ?
