Question

which of the following pairs and co prime (a) 9 and 12 (b) 15 and 3​

Answer 1

Answer:

. ... no one is co prime...

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a - 9 and 12

factors of 9 and 12...

9 - 1 , 3 , 9

12 - 1 , 2 , 3 , 4 , 6 , 12

common factor - 1 , 3....( it's not a co prime no.....u can search the definition of co prime numbers on google)

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b - 15 and 3

factors of 15 and 3...

15 - 1 , 3 , 5 , 15

3 - 1 , 3

common factors - 1 , 3....(it's not a co prime no.)

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u know co prime numbers can have one number as common and that no. is 1......u can see in both the options two no. are common.....so none is co prime...

HOPE U UNDERSTOOD.....