Express each number as a product of its prime factors: (iv) 5005 

Express each number as a product of its prime factors:  (v) 7429

Find the LCM and HCF of the following pairs of integers and verify that LCM × HCF = product of the two numbers. (i) 26 and 91

Find the LCM and HCF of the following pairs of integers and verify that LCM × HCF = product of the two numbers.  (ii) 510 and 92 

Find the LCM and HCF of the following pairs of integers and verify that LCM × HCF = product of the two numbers.  (iii) 336 and 54

Find the LCM and HCF of the following integers by applying the prime factorisation method. (i) 12, 15 and 21 

Find the LCM and HCF of the following integers by applying the prime factorisation method. (ii) 17, 23 and 29 

Find the LCM and HCF of the following integers by applying the prime factorisation method. (iii) 8, 9 and 25

Check whether 6n can end with the digit 0 for any natural number n

Explain why 7 × 11 × 13 + 13 and 7 × 6 × 5 × 4 × 3 × 2 × 1 + 5 are composite numbers.