Find the LCM of the following numbers by prime factorisation method. [6 Marks]
a. 32, 84
b. 26,52,78
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Answer:
a)
32= 8×4= 2×2×2×2×2
84= 2× 42= 2×7×2×3
LCM = 672
Step-by-step explanation:
- write the prime factors of 32 and 84
- circle the common factors
- multiply the common factors (only once) and the factors that are not common
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