Find the HCF of 128 and 168.
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Step-by-step explanation:
128
128 = 2 × 2 × 2 × 2 × 2 × 2 × 2
168
168 = 2 × 2 × 2 × 3 × 7
To find the hCF, multiply all the prime factors common to both numbers:
Therefore, GCF = 2 × 2 × 2
GCF = 8
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