CBSE Class 10 Math Revision Class | Chapter 1 Real Numbers | Important Questions

This video contains all the concepts that are tested in the previous year board papers and sample question papers from the chapter Real Numbers in CBSE class 10 Maths. Sample questions and the explanation for them are given for each concepts from the chapter Real Numbers. Concept 1: Euclid’s Division Lemma Question 1: Use Euclid’s division algorithm to find the HCF of 135 and 225 Concept 2: Fundamental Theorem of Arithmetic Question 2: 182 can be expressed as a product of its primes as a) 2^2 × 7 × 13 b) 2 × 7 × 13 c) 7 × 13^2 d) 2 × 3^2 × 13 Concept 3: Highest Common Factor (HCF) Question 3: HCF of 324 and 180 is a) 21 b) 36 C) 25 d) 18 Concept 4: Least Common Multiple (LCM) Question 4: LCM of 1080 and 2268 is a) 108 b)7560 c) 24500 d)22680 Concept 5: Product of numbers and LCM HCF Question 5: Find HCF and LCM of 32 and 46 and verify that HCF × LCM = Product of the given two numbers Question 6: Find the largest number which on dividing 41, 62, 75 leaves remainders 1, 2, and 3 respectively. Question 7: 6 different sweet varieties of count 32, 216, 136, 88, 184, 120 were ordered for an occasion. They need to be packed in such a way that each box has only one variety of sweet (you cannot mix sweets of different varieties in a box) and the number of sweets in each box is also the same. What is the minimum number of boxes required to pack? Concept 6: Revisiting Irrational Numbers Question 8: Prove that 6 + √7 is irrational, given that √7...