Question

36= 2 x 2 x 3x3
Step 3: Find the product of the common prime factors to get the HCF
HCF of 44, 60 and 36 = 2*2 = 4
Answer: HCF = 4
Exercise 3.2
A. Find the HCF by finding all factors.
I) 24,36
2) 20.30
3) 25,40
4) 14,21,28
5 45, 65, 75
6) 22,33,44
B. Find the HCF by the prime factorisation method.
1) 49,77
2 20.48
3) 40.56
4) 72.90
51 14,28,56
6) 12,48,72
7) 42,63,84 8) 24,72.90
C. Find the HCF by the prime factorisation method.
2) 490.540
3) 612,522
5) 108, 144,60
6) 106,192,96
225, 315
49, 70, 77​

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