Question

find
HCF of 45, 75 and 90​

Answer 1

By prime factorisation method

45= 3×3×5

75=3×5×5

90=2×2×2×2×2×5

HCF HCF of 45 75 and 90 = 3×5=15

Answer 2

Step-by-step explanation:

45=3×3×5

75=3×5×5

90=2×5×3×3

common factors are 3 and 5 so hcf is 15