(iv5005
(111) 3825
(iii) 8, 9 and 25
1. Express each of the following number as a product of its prime factors.
2. Find the LCM and HCF of the following integers by the prime factorization meth
EXERCISE - 1.2
(v) 7429
(1) 140
(ii) 156
(1) 12, 15 and 21 (ii) 17, 23, and 29
(iv) 72 and 108 (v) 306 and 657
Check whether 6" can end with the digit O for any natural number n.
Explain why 7 x 11 x 13 + 13 and 7 x 6 x 5 x 4 x 3 x 2 x 1 +5 are co-
numbers.
low will you show that (17 x 11 x 2) + (17 x 11 x 5) is a composite
xplain.
100
hat is the last digit of 6
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