Question

1. The pairs of numbers have been factorized. Find the HCF of each pair of numb
a) 18 = 2 3x3
20 = 2 x 2 x 5
b) 30 = 2 x 3 x 5
255x5
) 40 = 2 x 2 x 2 x 5
36 = 2 x 2 x 3x3
2. Find the HCF of the following by listing the common factors.
a) 12, 15
b) 20,30 c) 32, 40 d) 45,63
3. Find the HCF of the following using the prime factorization method.
a) 18,27
b) 12,30 c) 15, 30 d) 32, 40
f) 20,44
e) 12,36
g) 36, 54
h) 14.35
67​

Answer 1

Step-by-step explanation:

18=2.3.3

there fore hcf =3

20=2.5. 2 therefore hcf = 2

40=2.2.10

therefore hcf =2