4. Find the LCM and HCF of 24, 36, and 40 by using prime factorization.
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Step-by-step explanation:
24 = 2 × 2 × 2 × 3 = 23 × 3.
36 = 2 × 2 × 3 × 3 = 22 × 32
40 = 2 × 2 × 2 × 5 = 23 × 5.
HCF = product of smallest power of each common prime factor in the numbers = 22 = 4.
LCM = product of greatest power of each prime factor involved in the numbers = 23 × 32 × 5 = 360.
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