Mathematics for IGCSE & O level - Number (Section 3 - No. 6)
What is the HCF of 5544 and 2268?
12
36
108
168
Explanation
The prime factorizations of the numbers are 2^3*3^2*7*11 for 5544 and 2^2*3^4*7 for 2268. The HCF is therefore 2^2 * 3^2 * 7 = 252
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