Question

find the hcf of 9 15 18 20​

Answer 1

Answer:

• 1

Step-by-step explanation:

Factors of,

• 9= 3X3
• 15= 3X5
• 18= 2X3X3
• 20= 2X2X5
• There is nothing common...Thus the answer will be 1

Answer 2

Step-by-step explanation

9:- 1,3,9

15:- 1,3,5,15

18:- 1,2,3,6,18

20:- 1,2,4,5,10,

so highest common factot

hence we can conclude hcf=1

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ans:-1