Which of the following are co primes 6,15 6,35 9,12 or 18,27
Answers
step by step instructions. b a) Factors of 18 = 1, 2, 3, 6, 9,18
Factors of 35 = 1, 5, 7, 35
Common factor =1
Since , both have only one common factor, i.e., 1, therefore, they are co-prime numbers.
(b) Factors of 15 = 1, 3, 5,15
Factors of 37 = 1, 37
Common factor = 1
since, both have only one common factor, i.e., 1, therefore, they are co-prime numbers.
(c) Factors of 30 = 1, 2, 3, 5, 6, 15, 30
Factors of 415 = 1, 5, 83, 415
Common factor = 1,5
Since , both have more than one common factor, therefore, they are not co-prime numbers
(d) Factors of 17 = 1, 17
Factors of 68 = 1, 2, 4, 17, 34, 86
Common factor = 1, 17
Since, both have more than one common factor, therefore, they are not co-prime numbers
(e) Factors of 216 = 1, 2, 3, 4, 6, 8, 36, 72, 108,216
Factors of 215 = 1, 5, 43, 215
Common factor =1
Since, both Have only one common factor, i.e , 1 , therefore they are co-prime numbers.
(f) Factors of 81 = 1, 3, 9, 27, 81
Factors of 16 = 1, 2, 4, 8, 16
Common factor = 1
Since, both have only one common factor, i.e., 1, therefore, they are co-prime numbers.
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Answer:
(6,35)
Step-by-step explanation:
If u observe:
(6,15)=both are multiples a of 3. so 3 is a common factor.
(6,35) = no common factor except 1.
(9,12)= both are multiples of 3.so 3 is a common factor.
(18,27)=both are multiples of 3 and 9. so there are two factors in common.
Therefore, (6,35) is a co prime pair
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