CBSE MATHEMATICS (IX-X)

Revising previous year X maths questions and conducting chapter-wise revision can be highly beneficial for students for the following reasons: 1. Comprehensive coverage : Revising previous year questions and conducting chapter-wise revision ensures that students cover all the important topics and concepts in the syllabus. This approach helps in identifying areas of strength and weakness, allowing students to focus on improving their understanding of specific topics. 2. Effective time management : By revising previous year questions and following a chapter-wise revision schedule, students can allocate their study time efficiently. This method helps in prioritizing topics based on their importance and weightage in the exam, ensuring that students are well-prepared for all sections of the paper. 3. Improved retention : Revisiting previous year questions and revising chapters systematically helps in reinforcing learning and improving retention of key concepts. This approach ens

  X th   MATHEMATICS ASSIGNMENT 100424_002 CH.01 REAL NUMBERS   (To prove given number as irrational) Click here to get  same document in pdf form 

  X th   MATHEMATICS ASSIGNMENT 100424_001 CH.01 REAL NUMBERS   (Applications of HCF and LCM) Q.1   Six bells commence tolling together and toll at intervals of 2, 4, 6, 8 10 and 12 seconds respectively. In 30 minutes, how many times do they toll together? (excluding the one at start)     [ ANS: LCM(2,4,6,8,10,12) = 120 sec= 2 min. ,    15 times] Q.2 The traffic lights at three different road crossings change after every 48 sec, 72 sec and 108 sec respectively. If they all change simultaneously at 8:20:00 hrs, when will they again change simultaneously ?                           [ ANS:  LCM=  432 seconds  =  7 min 12 sec .  Hence  answer is 08:27:12 hrs] Q.3 A merchant has 120 ltrs of and 180 ltrs of two kinds of oil. He wants the sell oil by filling the two kinds of oil in tins of equal volumes. What is the greatest of such a tin.   [ ANS: HCF =60 ltrs.] Q.4 Find the least number of soldiers in a regiment such that they stand in rows of 15, 20, 25 and form a p