Question

7. Find the HCF and LCM of the following integers by using prime factorisation method
a) 12, 15, 21
b) 8. 9. 25
c) 21. 33. 45
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Answer 1

Answer:

Answer: (1) LCM(12, 15, 21) = 420, HCF(12, 15, 21) = 3 (2) LCM(17, 23, 29) = 11339, HCF(17, 23, 29) = 1 (3) LCM(8, 9, 25) = 1800, HCF(8, 9, 25) = 1. Explanation: Follow the steps mentioned below to find the LCM of the given integer. Step 1: Write down the prime factorization of each integer.

Answer 2

Answer:

I have only done LCM

Itz attached above !