Chapter 1 – Real Numbers

Show that 5 – root3 is irrational. Show that 5 - root3 is irrational. October 3, 2020 Category: Chapter 1 - Real Numbers , Exercise 7.1 , Maths , NCERT Class 10 ,

Prove that root3 is irrational. Prove that root3 is irrational. October 3, 2020 Category: Chapter 1 - Real Numbers , Exercise 7.1 , Maths , NCERT Class 10 ,

Find the HCF and LCM of 6, 72 and 120, using the prime factorisation method. 72 and 120 Find the HCF and LCM of 6 using the prime factorisation method. October 3, 2020 Category: Chapter 1 - Real Numbers , Exercise 7.1 , Maths , NCERT Class 10 ,

Find the HCF of 96 and 404 by the prime factorisation method. Hence, find their LCM. Find the HCF of 96 and 404 by the prime factorisation method. Hence find their LCM. October 3, 2020 Category: Chapter 1 - Real Numbers , Exercise 7.1 , Maths , NCERT Class 10 ,

Find the LCM and HCF of 6 and 20 by the prime factorisation method. Find the LCM and HCF of 6 and 20 by the prime factorisation method. October 3, 2020 Category: Chapter 1 - Real Numbers , Exercise 7.1 , Maths , NCERT Class 10 ,

A sweet seller has 420 kaju barfis and 130 badam barfis she wants to stack them in such a way that each stack has the same number and same type, and they take up the least area of the tray. What is the number of burfis that can be placed in each stack for this [...]

Show that any positive odd integer is of the form 4q + 1 or 4q + 3, where q is some integer. Show that any positive odd integer is of the form 4q + 1 or 4q + 3 where q is some integer October 3, 2020 Category: Chapter 1 - Real Numbers , Exercise [...]

Show that every positive even integer is of the form 2q and that every positive odd integer is of form 2q+1 ,where q is some integer. Show that every positive even integer is of the form 2q and that every positive odd integer is of form 2q+1 where q is some integer October 3, 2020 [...]

Use Euclid’s aglorithm to find the HCF of 4052 and 12576. Use Euclid's aglorithm to find the HCF of 4052 and 12576. October 3, 2020 Category: Chapter 1 - Real Numbers , Exercise 7.1 , Maths , NCERT Class 10 ,

The following real numbers have decimal expansions as given below. In each case, decide whether they are rational or not. If they are rational and of the form p/q , what can you say about the prime factors of q? (i) 43.123456789 (ii) 0.120120012000120000… (iii) 43.123456789 decide whether they are rational or not. If they [...]