Correct option is C
Given: 15, 21, 27, 33, 39, ?
Logic: Each number is increase by +6.
15 + 6 = 21,
21 + 6 = 27,
27 + 6 = 33,
33 + 6 = 39,
39 + 6 = 45.
So, missing number is 45.
Thus, the correct answer is (c).
All Courses
- Engineering Maha Pack
- SSC JE
- DSSSB JE and AE
- RRB JE
- BTSC JE
- UPSSSC JE
- OSSC JE
- UPPSC
- DRDO
- BPSC AE
- GENERAL AWARENESS
- ISRO
- BEL
- JKSSB JE
- AFCAT
- HPCL
- NHPC
- UKPSC
- AAI ATC
- JSSC JE
- Odisha JE
- RRB JE FREE
- OPSC AEE
- UPRVUNL
- PPSC
- All AE JE
- THDC
- MPPGCL
- JE RBI
- BHEL
- NPCIL
- HPPSC AE
- APSC JE
- SSC JE Civil Engineering
- RRB JE Civil Engineering
- AAI
- UPSSSC JE Civil Engineering
- BPSC AE Civil Engineering
- RRB ALP
- DDA JE
- RSSB JE(Degree) Civil Engineering
- RSSB JE(Diploma) Civil Engineering
- RPSC AE Civil Engineering
- RRB NTPC
- MPESB SE Civil
- GATE and ESE
- RRB Jr. Engineer
- State JE
- RRB Technician Exam
- DFCCIL 2025
- UPPCL
- Engineering Courses
- MPESB
- Free Package
- Skill Development
- GATE Civil Engineering
- DRDO CEPTAM
- ENGINEERING EXAM
- Railways Group D
English
150 Questions
150 Marks
150 Mins
