EXTRA QUESTIONS RELATED TO EXERCISE 1.2 and 1.3
1. Express 7325' as product of its prime numbers.
2. Determine the prime factorisation of *S&SDO.
3. Explain why 3x5x7+7 is a composite number.
4. Find LCM and HCF of following integers by applying the prime factorisation method-
1) 8, 9 and 25
1) 40. 36 and 126
5 The HCF of two numbers is 145 and their LCM is 2175. If one number is 725 find the
other number
6. The HCF of teo numbers is 16 and their product is 3072 Find their LCM.
7. Prove that 2_17 is imabonal.
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