# CBSE 10th Maths: Real Numbers

NCERT Exercise Solution: 1.1 to 1.4
1. #### Exercise 1.1 | 5 questions

Finding HCF using Euclid's Division Algorithm, word problems on HCF, expressing positive integers, their squares and cubes in the form 6q + r, 3q + r, and 9q + r.

2. #### Exercise 1.2 | 7 questions

Fundamental theorem of arithmetic, prime factorization is unique, finding LCM and HCF by prime factorization, product of 2 numbers is equal to the product of LCM and HCF of the 2 numbers and word problems in LCM and HCF.

3. #### Exercise 1.3 | 3 Questions

Proving that numbers such as √5 are irrational. The method is by assuming the contrary and negating the assumption. Further proving that product of a rational and irrational is irrational and sum of a rational and an irrational number is irrational.

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