Question

(i) 140
1. Express each of the following numbers as a product ofits prime factor's.
(i) 156 (iii) 3825
(iv) 5005 (v) 7429
2. Find the LCM and HCF of the following integers by the prime factorization method.
2 (i) 12, 15 and 21 (ii) 17, 23, and 29 (iii) 8, 9 and 25
(iv) 72 and 108 (v) 306 and 657
3. Check whether 6" can end with the digit 0 for any natural number n.
4. Explain why 7 x 11 x 13+13 and 7 x 6 x 5 x 4 x 3 x 2 x 1 +5 are compo
numbers.
5. How will you show that (17 x 11 x 2) + (17 x 11 x 5) is a composite nun
Explain.
6. Which digit would occupy the units place of 610.​

Answer 1

Step-by-step explanation:

the solution of

exercise

1.2