ఐదు వరుస సరిసంఖ్యల సగటు 16, ఆ సంఖ్యల వ్యత్యాసాన్ని కనుగొనండి.

  1. 40
  2. 16
  3. 8
  4. 10

Answer (Detailed Solution Below)

Option 3 : 8
Free
RRB Exams (Railway) Biology (Cell) Mock Test
10 Qs. 10 Marks 7 Mins

Detailed Solution

Download Solution PDF

ఇవ్వబడింది:

ఐదు వరుస సరిసంఖ్యల సగటు = 16

వాడిన సూత్రం:

V = వ్యత్యాసం

∑ = మొత్తం

x = పరిశీలన

n = పరిశీలనల సంఖ్య

a = సంఖ్యలలో 1 వ విలువ

d = సామాన్య బేధం

లెక్క:

⇒ 2a + (5 – 1)2 = 32

⇒ 2a + 4 × 2 = 32

⇒ 2a = 32 – 8

⇒ 2a = 24

⇒ a = 12

1వ విలువ = 12

ఇతర విలువలు 14, 16, 18, 20

⇒ 

⇒ 

⇒ 8

⇒ V = 8

∴ సంఖ్యల యొక్క వ్యత్యాసం 8

Latest RRB NTPC Updates

Last updated on Jul 5, 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

Hot Links: teen patti master 2024 all teen patti teen patti circle teen patti gold real cash teen patti gold old version