All Exams Test series for 1 year @ ₹349 only
Question

What should come in place of the question mark (?) in the given series to make it logically complete?

ON35, MP44, KR53, ?

This question was previously asked in
RRB NTPC 2025 Graduate CBT 2 Question Paper PDF (10-Jul-2026) (Shift 1)
The correct answer is

IT62

Analyse each component of the series separately.

First letter: O(15), M(13), K(11), ? → decreasing by 2 each time → next = I(9).

Second letter: N(14), P(16), R(18), ? → increasing by 2 each time → next = T(20).

Number: 35, 44, 53, ? → increasing by 9 each time → next = 62.

Combining: I + T + 62 = IT62.

Hence, IT62 is the next term in the series.

Was this answer helpful?

Similar Questions

  1. Select the alphanumeric-cluster from among the given options that can replace the question mark (?) in the given series.
    G7H, I9J, K11L, ?
  2. A series is given with one term missing. Select the correct alternative from the given options that will complete the series. 

    EF27, GI34, IL41, KO48, ?

  3. Select the term from among the given options that can replace the question mark (?) in the following series.

    2A, 3C, 5F, 7J, 11O, ?
  4. Select the term from among the given options that can replace the question mark (?) in the following series.

    D4W, G5T, K9P, ?, S23H, V37E
  5. Select the number from the given options that can replace the (?) in the following alphanumeric series.

    Q, 18, S, 16, U, 13, W, ?
  6. Select the option that can replace the question mark (?) in the following series.
    D3K, E5J, F7I, G11H, ?
  7. Select the term that can replace the question mark (?) in the following series.

    O2F, R5H, U10J, X17L, ?
  8. Select the option that can replace the question mark (?) in the following series.
    L34E, O46H, R58K, U70N, ?
  9. Select the alphanumeric term that can replace the question mark (?) in the following series.

     E972D, H324E, K108G, N36J, Q12N, ?

  10. Select the alphanumeric term that can replace the question mark (?) in the following series. 

    Z63C, X31F, V15I, T7L, R3O, ?


Important Questions from Alpha-numeric series

  1. Consider the following sequence of numbers: 5 1 4 7 3 9 8 5 7 2 6 3 1 5 8 6 3 8 5 2 2 4 3 4 9 6 How many odd numbers are followed by the odd number in the above sequence?

  2. Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it? _sr_tr_srs_r_srst_

  3. Find the missing number in the following series: 43, 172, 86, 344, ?

  4. Select the missing numbers from the given alternatives

  5. How many such pairs of letters are there in the word JOURNEY (in forward direction), each of which has as many letter in the same sequence between them in the word as in the English alphabet?

Need Expert Advice?
Upcoming Exams
RRB Technician
October 06, 2026
RRB JE
October 27, 2026
RRB ALP
November 03, 2026
Test Series
RRB NTPC img
Railways
RRB NTPC Under Graduate 2026 New Mock Test Series
1580 Tests 2 Tests Free
544 Attempts
4.3(498)
English, Hindi, Telugu +7 More

Start Your Preparation with Prepp Mobile App

Download the app from Google Play & App Store
Download the app from Google Play & App Store
Prepp Mobile App