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CBSE Class 9 Syllabus

 Subjects : CBSE CLASS 9 


SCIENCE CHAPTER 1

HINDI हिंदी साहित्य एवं इतिहास


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Online Quiz : Assessment

(*NEW)   22.12.2024  &nbsp English Language: CLAUSES    CHECK RESULTS 02.12.2024 &nbsp Hindi : क्रिया विशेषण    CHECK RESULTS 10.11.2024   ENGLISH : TENSES    CHECK RESULTS 13.10.2024   ENGLISH : ACTIVE-PASSIVE VOICE   CHECK RESULTS
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Study Material

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Class Notes    Direct Indirect Speech (Narration)    Active Passive Voice CLAUSES and its Types     Parts Of Speech : Noun , Pronoun ..    Here are All Classes Study Notes with Complete Exercise :  (More Content Will Be Uploaded Soon ) CBSE Board   Class 6 Class 7 Class 8 Class 9 Class 10 ICSE Board Class 6 Class 7 Class 8 Class 9 Class 10 UP Board English Medium Class 6 Class 7 Class 8 Class 9 Class 10 UP Board Hindi Medium Class 6 Class 7 Class 8 Class 9 Class 10   हिंदी: साहित्य एवं इतिहास Timeline of Past Dynasties     
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Ask Your Doubts

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FEEL FREE TO ASK DOUBTS- Q. How to find LCM of 72,180,360 Ans : There are three methods to Find LCM - FACTOR TREE METHOD  PRIME FACTORISATION METHOD DIVISION METHOD 1. Factor Tree Method  : 72 2*  36 2* 2* 18 2* 2* 2*9 2* 2* 2* 3*3 180 2*90 2*2*45 2*2*3*15 2*2*3*3*3*5 360 2*180 2*2*90 2*2*2*45 2*2*2*3*15 2*2*2*3*3*5 So LCM is least common multiple which is 2*2*2*3*3**5 =360 (Here We write all common factors & rest factors both) 2.  Prime Factorisation method : [ 72 ]= 2 | 72 2 | 36 2 | 18 3 | 9 3 | 3    | 1 = 2*2*2*3*3 [180]= 2 | 180 2 | 90 3 | 45 3 | 15 5 | 5    | 1 = 2*2*3*3*5 [360]= 2 | 360 2 | 180 2 | 90 3 | 45 3 | 15 5 | 5    | 1 = 2*2*2*3*3*5 So LCM = 2*22*3*3*5 = 360 3. Division method of LCM 2 | 72 , 180 , 360 2 | 36 , 90 , 180 2 | 18 , 45 , 90 3 | 9   , 15 , 45 3 | 3   , 5   , 15 5 | 1   , 5   , 5      | 1   , 1   , 1 So LCM...
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