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Find the next term in the following series.

5I, 7J, 11L, 17O, ?

This question was previously asked in
RRC Group D Previous Paper 1 (Held On: 17 Sep 2018 Shift 1)
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  1. 25S
  2. 25Y
  3. 20P
  4. 18C

Answer (Detailed Solution Below)

Option 1 : 25S
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Detailed Solution

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Positional value table

The pattern followed here is as follows:

RRB Group-D 17th Sep 2018 Shift 1 Q1 to Q100 (1) hindi हिंदी harish 1

Hence, “25S” is the correct answer.
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Latest RRB Group D Updates

Last updated on Jul 17, 2025

-> A total of 1,08,22,423 applications have been received for the RRB Group D Exam 2025. 

-> The RRB Group D Exam Date will be announced on the official website. It is expected that the Group D Exam will be conducted in August-September 2025. 

-> The RRB Group D Admit Card 2025 will be released 4 days before the exam date.

-> The RRB Group D Recruitment 2025 Notification was released for 32438 vacancies of various level 1 posts like Assistant Pointsman, Track Maintainer (Grade-IV), Assistant, S&T, etc.

-> The minimum educational qualification for RRB Group D Recruitment (Level-1 posts) has been updated to have at least a 10th pass, ITI, or an equivalent qualification, or a NAC granted by the NCVT.

-> Check the latest RRB Group D Syllabus 2025, along with Exam Pattern.

-> The selection of the candidates is based on the CBT, Physical Test, and Document Verification.

-> Prepare for the exam with RRB Group D Previous Year Papers.

More Mixed Series Questions

Q1.Find the next term in the given series. W29, P34, I39, B44, ?
Q2.What will be written in the place of question mark in the given series? C3F6M13O15?14
Q3.Which of the following terms will replace the question mark (?) in the given series to make it logically complete? RCM 15, WHH 25, BMC 35, GRX 45, ?
Q4.Which of the following letter-number clusters will replace the question mark (?) in the given series to make it logically complete? HDX 7, MIC 16, RNH 34, WSM 70, BXR 142, ?
Q5.Which of the following will come in place of the question mark (?) in the following sequence? 16D7, 18G10, 21K14, 25P19, ?
Q6.Which number should replace the question mark (?) in the series below? 15, 21, 27, 33, 39, ?
Q7.What should replace the question mark (?) to complete the given sequence in a logical manner? ZY25, SR36, LK49,?
Q8.What should replace the question mark (?) to complete the given sequence in a logical manner? POM25, TMP36, XKS49, BIV64, ?
Q9.What should replace the question mark (?) to complete the given sequence in a logical manner? DJ24 GM29 JP39 MS54 ?
Q10.What should replace the question mark (?) to complete the given sequence in a logical manner? GA2, ID3, KG5, MJ7, ?

More Series Questions

Q1.Find the next number in the series. 6, 12, 18, 36, 54, 108, ?
Q2.Find the next number in the series. 24, 36, 60, 84, 132, 156, ?
Q3.Which one of the following images numbered as (1), (2), (3), (4) will be the next image for the given series?
Q4.Find the next number in the series. 675, 580, 471, 348, 211, ?
Q5.Find the next number in the series. 3, 4, 10, 33, 136, ?
Q6.Find the next term in given series. RETIREMENT, TIREME, ETIREMEN, IREM, ? 
Q7.Find the next term in the given series. W29, P34, I39, B44, ?
Q8.Find out the wrong number in the given series: 5, 27, 61, 122, 213, 340, 509
Q9.Select the number that can come in place of the question mark (?) in the following series : 1, 1, 2, 3, 7, 22, ?
Q10.Select the option figure that will complete the series of question figure:
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More Logical Reasoning Questions

Q1.If it is possible to make only one four-letter meaningful word with the first, third, fourth, and eighth letter of the word ‘ABNORMALITY’, which could be the second letter of the word from the left end? If more than one such word can be formed, give ‘X’ as the answer. If no such word can be formed, give ‘Z’ as your answer.
Q2.How many boys are there between Q and T?
Q3.How many boys are lighter than U?
Q4.Find the next number in the series. 6, 12, 18, 36, 54, 108, ?
Q5.Find the next number in the series. 24, 36, 60, 84, 132, 156, ?
Q6.Find the odd image out in the given series.
Q7.How many squares are there in the given figure?
Q8.A man starts from point A and walks 5km towards East. He turns right and walks 4km; turns right again and walks 3km. He then takes another right and walks 6km. He walks 6km towards East; turns right and walks 2km and turns left and walks 1km to reach B. How far is A from B?
Q9.Replace the question mark with an option that follows the same logic applied in the first pair. 29 : 18 :: 39 : ?
Q10.A girl is facing North direction. If she turns 59 degrees in clockwise direction and 31 degrees in the same direction, which direction will she face now?
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