নিচের ধারার প্রশ্ন চিহ্ন (?) এর জায়গায় কোন সংখ্যা বসবে তা চয়ন করুন।

69, 55, 26, 13, ?

This question was previously asked in
RRB NTPC CBT-I Official Paper (Held On: 28 Dec 2020 Shift 1)
View all RRB NTPC Papers >
  1. 2
  2. 5
  3. 3
  4. 4

Answer (Detailed Solution Below)

Option 4 : 4
Free
RRB NTPC Graduate Level Full Test - 01
2.4 Lakh Users
100 Questions 100 Marks 90 Mins

Detailed Solution

Download Solution PDF

প্রদত্ত ধারা: 69, 55, 26, 13, ?

এখানে যুক্তিটি হল:

পূর্ববর্তী সংখ্যার অঙ্কগুলোকে একে অপরের সাথে গুণ করে + 1 = পরবর্তী সংখ্যা।

এখানে যে ধরণটি অনুসরণ করা হচ্ছে তা হল:

6 x 9 + 1 = 55

5 x 5 + 1 = 26

2 x 6 + 1 = 13

1 x 3 + 1 = 4

অতএব, ধারার পরবর্তী সংখ্যা হবে "4"

Latest RRB NTPC Updates

Last updated on Jul 10, 2025

-> RRB NTPC Under Graduate Exam Date 2025 has been released on the official website of the Railway Recruitment Board.

-> The RRB NTPC Admit Card will be released on its official website for RRB NTPC Under Graduate Exam 2025.

-> Candidates who will appear for the RRB NTPC Exam can check their RRB NTPC Time Table 2025 from here. 

-> The RRB NTPC 2025 Notification released for a total of 11558 vacancies. A total of 3445 Vacancies have been announced for Undergraduate posts like Commercial Cum Ticket Clerk, Accounts Clerk Cum Typist, Junior Clerk cum Typist & Trains Clerk.

-> A total of 8114 vacancies are announced for Graduate-level posts in the Non-Technical Popular Categories (NTPC) such as Junior Clerk cum Typist, Accounts Clerk cum Typist, Station Master, etc.

-> Prepare for the exam using RRB NTPC Previous Year Papers.

-> Get detailed subject-wise UGC NET Exam Analysis 2025 and UGC NET Question Paper 2025 for shift 1 (25 June) here

Get Free Access Now
Hot Links: teen patti teen patti yes teen patti plus