तीन संख्याएँ x ≤ y ≤ z जो एक-दूसरे के सह-अभाज्य हैं, इस प्रकार हैं कि पहली दो संख्याओं का गुणनफल 143 है और अंतिम दो संख्याओं का गुणनफल 195 है। तीनों संख्याओं का योग ______ है।

This question was previously asked in
RRB Group D 1 Sept 2022 Shift 2 Official Paper
View all RRB Group D Papers >
  1. 62
  2. 45
  3. 39
  4. 29

Answer (Detailed Solution Below)

Option 3 : 39
Free
RRB Group D Full Test 1
100 Qs. 100 Marks 90 Mins

Detailed Solution

Download Solution PDF

दिया गया है:

प्रथम दो संख्याओं का गुणनफल = 143

अंतिम दो संख्याओं का गुणनफल = 195

प्रयुक्त अवधारणा:

संख्याएँ, सह-अभाज्य होती हैं जब उनका एकमात्र उभयनिष्ठ गुणनखंड 1 होता है।

महत्तम समापवर्तक = 1

गणना:

माना संख्याएँ a, b, और c हैं

⇒ x × y = 143, y × z = 195

इन दोनों गुणनफलों में y उभयनिष्ठ है।

143 और 195 का महत्तम समापवर्तक = y = 13

⇒ a = 143/13 = 11

⇒ b = 195/13 = 15

∴ तीन सह-अभाज्य संख्याएँ 11, 13 और 15 हैं।

योग = 11 + 13 + 15 = 39

उत्तर 39 है।

Latest RRB Group D Updates

Last updated on Jun 2, 2025

-> The RRB NTPC Admit Card 2025 has been released on 1st June 2025 on the official website.

-> The RRB Group D Exam Date will be soon announce on the official website. Candidates can check it through here about the exam schedule, admit card, shift timings, exam patten and many more.

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

-> 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 National Apprenticeship Certificate (NAC) granted by the NCVT.

-> This is an excellent opportunity for 10th-pass candidates with ITI qualifications as they are eligible for these posts.

-> 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 LCM and HCF Questions

More Number System Questions

Hot Links: teen patti - 3patti cards game teen patti baaz teen patti real