Question

6. The product of two numbers is 7623. If their LCM is 693, find their HCE
7. The HCF of two numbers is 23 and their LCM is 1449. If one of the numbers is 207, then find the
other.
8. The product of two numbers is 7623. If their, HCF is 11, find their LCM.
9. The HCF and LCM of two numbers are 131 and 8253 respectively. If one of the numbers is 17
find the other.
10. The product of two numbers is 2160 and their HCF is 12. Find their LCM.
11, The LCM of two numbers is 128 and their product is 8192. Find their HCF.
12. If the product of the LCM and HCF is 28125 and one of the numbes is 125, find the other number.
13. Verify that HCF of 10, 15 and 20 is a factor of LCM of the same numbers.
14. Verify that LCM of 12, 20 and 30 is a multiple of their HCF.
15. Show that the HCF of 12 and 15 is not greater than either 12 or 15.
Also show that the LCM of 12 and 15 is not less than either 12 or 15.
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Answer 1

Use the formula

HCF×LCM=Product of two numbers