Question

What is the HCF of 25 and 30 and what is the lcm of 48 and 54

Answer 1

Step-by-step explanation:

25 = 5×5

30 = 2×3×5

HCF of 25 and 30 = 5

48 = 2×2×2×2×3

54 = 2×3×3×3

LCM of 48 and 54 = 2×2×2×2×3×3×3 = 432

Answer 2

Step-by-step explanation:

Find the prime factorization of 25

25 = 5 × 5

Prime factors of 30 are 2, 3, 5. Prime factorization of 30 in exponential form is:

30 = 21 × 31 × 51

Find the prime factorization of 54

54 = 2 × 3 × 3 × 3

Prime factors of 48 are 2, 3. Prime factorization of 48 in exponential form is:

48 = 24 × 31