Question
Download Solution PDF(13)3 + (- 8)3 + (- 5)3 का मान ज्ञात कीजिए।
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFदिया गया है:
(13)3 + (- 8)3 + (- 5)3
प्रयुक्त अवधारणा:
A3 - B3 = (A - B) (A2 + AB + B2)
(-A)3 = -A3
गणना:
(13)3 + (- 8)3 + (- 5)3
⇒ (133 - 83) - 53
⇒ (13 - 8) (132 + 13 × 8 + 82) - 125
⇒ 5 × (169 + 104 + 64) - 125
⇒ 5 × 337 - 125
⇒ 5 × (337 - 25)
⇒ 5 × 312
⇒ 40 × 39
⇒ 39 × 40
∴ (13)3 + (- 8)3 + (- 5)3 का मान 39 × 40 है।
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