Question

3. Find the HCF of the following numbers using the prime factorisation method
a. 27, 81
b. 18, 117
c. 250, 450
d. 256, 1,024
e. 180, 270, 630
4. Find the HCF of the following using the long division method.
b. 575, 920
c. 891, 1377
a. 144, 372
d. 830, 790, 650
e. 2,241, 8,217, 747
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Answer 1

Answer:

1. 27
2. 9
3. 50
4. 256
5. 90.................