Question

plz. give me the extra que of lesson 1of class10th

Answer 1

pls refer to ncert exampler book published by ncert for extra questions its available in PDF format online . hope it helps

Answer 2

Answer:

1. Use Euclid’s algorithm to find the HCF of 12576 and 4050.
2. Show that any positive odd integer is of the form 4q + 6 or 4q + 10, where  q is some integer.
3. Use Euclid’s algorithm to find the HCF of 38220 and 196.
4. Use Euclid’s division lemma to show that the cube of any positive integer is of the form   9m, 9m + 1 or 9m + 8.
5. Find the LCM and HCF of 8 and 32 by the prime factorisation method.
6. Find the LCM and HCF of 20 and 96 by the prime factorisation method.
7. Prove that 2√5 is irrational.
8. Find the HCF and LCM of the following pairs of integers and verify that LCM × HCF =  Product of the two numbers.

• 96 and 126
• 88 and 20
• 196 and 12